SUSTAINABILITY 
REPORT22

Make it
happen
About this report
This annual sustainability report covers information 
and data from Mercury Engineering Ltd. and all entities 
under its control for the calendar year 2022 (coinciding 
with its financial year 2022), except for data related to 
the company’s 2022 CDP submission regarding 2022 
emissions data, which will not be published until Q3 of 
2023. Mercury continues to work towards preparing 
its sustainability report “with reference” to the Global 
Reporting Initiative (GRI), the global best practice 
standards for sustainability reporting. This year again, 
it has used the GRI standard as a basis for the report 
structure and an enhanced reporting index is included to 
help the reader find relevant content.
Mercury’s 2022 Sustainability Report covers all entities 
governed by Mercury worldwide, reflecting our group-
wide sustainability strategy.
Please direct any question related to this report to 
sustainability@mercuryeng.com
Date published: May 2023
CONTENTS
Introduction
1.	 A message from Eoin Vaughan	
1
2.	 About Mercury	
4
3.	 Governance	
6
4.	 Our Sustainability Strategy	
9
5. 	 Our Stakeholder Engagement	
12
6.	 Being an Employer of Choice	
15
7.	 Minimising our Environmental Footprint	
22
8.	 Maintaining Responsible Partnerships	
29
9.	 Well-being of Local Communities	
31
10.	 Mercury 2022 Reporting Index	
34
11.	Our Partners	
42
12.	Our CSR Partners	
43
Entities Covered by this Report 	
44

brave &
  dynamic
1 
On behalf of Mercury, Europe’s leading provider of 
construction solutions, I am proud to present our 
2022 Sustainability Report.  
As a group, we are shaping our industry and building 
sustainable communities through best practices in 
environmental, social, and governance (ESG) practices. 
Our expertise in managing complex projects for global 
corporations helps to facilitate technological progress and 
sustainable growth throughout our key regions.
2022 saw us celebrate our 50th year in business, 
and the urgency for climate action has never been 
greater, necessitating a shift from ambitious goal setting 
to rigorous implementation. Our crucial role in this 
transition lies in sectors such as data centres, advanced 
technologies, and life sciences. Our commitment to 
sustainability is deeply embedded in our Beyond50 
strategy, particularly within the ‘Our Planet, Our Duty’ 
plan, and we acknowledge the necessity for ongoing 
improvement.
Our people consistently deliver with certainty, 
driving considerable investment in reducing our 
environmental footprint and firmly committing to 
our science-based carbon reduction targets. As an 
industry leader, we take the responsibility of pioneering 
change, introducing best practices, and inspiring our 
industry towards decisive climate action.
As we strive towards a sustainable future, we commit to 
creating a lasting legacy. This isn’t just what our clients 
and communities expect — it’s unequivocally the right 
thing to do.
1.	 A MESSAGE FROM 
EOIN VAUGHAN
	
MERCURY’S CEO

2 
Sustainability Report 2022
SOME OF OUR KEY 
ACHIEVEMENTS
2022
OCCUPATIONAL
HEALTH & SAFETY
DIVERSITY 
& INCLUSION
LEARNING
& DEVELOPMENT
ENVIRONMENTAL
FOOTPRINT
Zero 
reported ethical 
issues
3,500+ 
employees from 
46 different 
nationalities
Zero 
incidents reported 
in relation to 
corruption
Silver
Award for ‘Investors 
in Diversity’ 
(improvement from 
Bronze in 2020)
285 
mechanical 
& electrical 
apprentices 
employed
35 
hours of training 
per employee 
per year
Zero 
environmental 
adverse findings 
from statutory bodies
B’ CDP
December 2022 
(Construction 
industry at C)	
1,871 
tCO2e
generated in 2022 
in Scope 1 & 2
Carbon 
reduction Targets 
approved by SBTi
Silver 
Badge on Ecovadis 
for Sustainability
0.05% 
accident frequency 
rate
79,510 
training hours 
dedicated to EHS
40,000 
Environmental, 
Health & Safety 
(EHS) Audits, incl. 
3,500+ Covid-19 
audits
98%
waste diverted 
from landfill
150+
Digital edge virtual 
tours completed 
Electric
powered heavy 
machinery added 
to fleet

3 
Sustainability Report 2022
As we continue to build and manage engineering projects 
across a range of key sectors in Europe and increasingly 
further away, our focus is to provide solutions that 
enhance development in technology, well-being, and the 
built environment, while entering new sectors.
Mercury is led by a multidisciplinary team of diverse 
individuals, steered by our CEO Eoin Vaughan. Our 
leadership team is passionate about creating innovation 
and change. 
We work with over 5,000+ subcontractors and suppliers 
every year to achieve the quality project outcomes we 
are known for; we partner with them to reach our joint 
goals, with sustainability at the forefront of our focus. As 
responsible partners we support them where needed 
to ensure that our joint activities are sustainable from 
an environmental, economic, and positive social impact 
perspective.
As part of Mercury’s long-term strategy, we have 
committed to being a responsible business and 
published our commitment and sustainability statement  
which is posted to our website1. 
1.	 https://www.mercuryeng.com/wp-content/uploads/2021/12/2021-Sustaina­
bility-Policy-Statement.pdf
2.	 ABOUT 
MERCURY
Mercury is a privately-owned entrepreneurial general contractor headquartered in Ireland. 
We are dedicated to achieving the highest possible standards of Health and Safety on 
our leading-edge projects, while living our values of “Dynamic”, “Brave” and “Make it 
Happen”.
This is our second annual sustainability report containing 
updates and achievements for 2022.
Our 2022 construction projects involved operations in 
Belgium, Denmark, France, Germany, Ireland, Italy, The 
Netherlands, Poland, Spain, Sweden, Turkey and the UK.
Our Business Units: 
	– Hyperscale Trade Partner
	– Hyperscale Construction
	– Enterprise
	– Critical Data Infrastructures
	– DCBS - Data Centre and Building Services
	– Live Environment
	– Advanced Technologies Construction
	– Advanced Technologies Trade Partner

4 
Sustainability Report 2022
1
2
3
4
5
8
9
10
12
11
13
14
7
6
1.	 Ireland
2.	 Denmark
3.	 France
4.	 Germany
5.	 Greece
6.	 Israel
7.	 Italy
8.	 Netherlands
9.	 Poland
10.	Spain
11.	Sweden
12.	Switzerland
13.	Turkey
14.	UK

5 
Sustainability Report 2022
GOVERNANCE STRUCTURE 
Mercury’s governance structure ensures accountability, transparency, and clear lines 
of communication for decision making and driving for outcomes which prioritise 
sustainability and responsible business practice.
3.	 GOVERNANCE
The Board of Directors
The Board provides the most senior level of governance 
and oversight. They are responsible for the management, 
performance, and long-term success of the group, and 
oversee the company-wide sustainability strategy and 
actions.
Executive Management Team
The CEO and the Executive Management team play 
a significant role in defining our sustainability policy, 
strategy, and goals, communicating our objectives to 
the group, and implementing constructive change.
The Executive Management Team is responsible for 
reviewing and approving the reported information 
including material topics, which they report to the Board 
of Directors.
GOVERNANCE POLICIES
There are a number of important policies that govern 
various aspects of Mercury’s operations. The following 
policies are approved directly by Mercury’s CEO:
	– Governance: Mercury is committed to operating in 
accordance with the highest standards of corporate 
governance and has a robust suite of policies and 
procedures covering the prevention of bribery, 
protecting human rights and the governance of 
compliance.
	– Conflicts of Interest: Mercury requires all board 
members and employees to abide by a strict conflict of 
interest policy and to declare on an annual basis that 
they have not engaged in any conduct that violates 
Mercury’s Code of Conduct. In addition, employees are 
required to annually disclose any gifts, where the value 
exceeds €250, which they have received over the prior 
year from anyone who is doing business, has done 
business, or is seeking to do business with Mercury.
	– Internal Audits: Mercury has a Group Internal 
Audit function in place which provides independent 
assurance over the control environment on a 
continuous basis. Periodic reports are provided to the 
Audit Committee. Mercury’s Internal Audit function

6 
Sustainability Report 2022
completed 13 audits during 2022 covering both 
Project and Group activities. For 2022 there were zero 
reported ethical issues.
	– Whistleblower Policy: Apart from internal audits 
taking place on a regular basis, Mercury’s “Speak Up” 
policy intends to encourage and enable employees, 
contractors and others to raise any concerns or 
disclose information about any violations of misconduct 
or unethical behaviour by any Mercury employee, 
director or officer by reporting such behaviour to a 
direct manager, HR, Compliance function or through 
an independent, multilingual and confidential hot-line 
service, which is accessible 24 hours a day, seven 
days a week. Each site has a dedicated “Speak-Up” 
poster containing relevant contact number displayed 
in a central location. In 2022, our policies have been 
updated to reflect the timeframe for communication 
and feedback to the individual making the report, 
whether using the dedicated Speak Up line or any 
other channel. During 2022 we had zero calls to this 
hot line in relation to ethical issues, in addition we had 
zero ethical issues reported via other channels. In the 
event there would be ethical issues reported via the 
hot line, this would be investigated by the Compliance 
Function and reported to the Board, Audit & Risk 
Committees.
	– Compliance and Ethics Policies: Policies designed 
to inform employees of the principles and procedures 
to follow in relation to specific ethics and compliance 
topics are in place. This includes our Code of Conduct, 
which is underpinned by a number of individual policies 
covering specific areas such as Gifts & Hospitality, 
Conflict of Interest, Anti-Fraud, Anti-Bribery, Fair 
Competition, Sponsorship & Donations and our 
“Speak-Up” (whistleblowing) procedures. They set out 
how employees should behave and interact with our 
key stakeholders, including senior management, fellow 
employees, clients, and our supply chain.
	– Document Retention and Protection of Privacy: 
As part of its accounting and compliance policies and 
procedures, Mercury has a records retention policy that 
identifies the types of documents that must be retained 
and for how long. This is done in full compliance 
with GDPR rules and regulations. Document control 
enhancements includes the appointment of a Group 
Document Controller and Formal approval process 
and system where all stages are managed under strict 
requirements including fully traceable change history, 
version control, loss of damage, protection from 
unauthorised use and governance, all in compliance 
with ISO 9001 and ISO 19650, a systematic, 
standardised approach to the life cycle of controlled 
documentation within the organisation. Documentation 
includes our policies, Standard Operating Procedures, 
and all controlled documentation within our 
organisation.
	– Information Security & Knowledge Management 
As part of our ongoing commitment to improving 
processes and providing a high standard of security, 
Mercury is currently in the process of moving to 
achieve ISO27001 accreditation with intended 
timelines of completion by Q3 2023. ISO27001 
will ensure a competitive advantage allowing us 
to win & retain business, bolster our reputation as 
industry leaders and ensure the highest standards 
of information security are in place. We have also 
introduced mandatory cybersecurity training and 
have incorporated cybersecurity into our annual 
performance reviews to ensure our human firewall 
remains strong across the board for our teams.
Our employee engagement portal, iNSITE, offers 
a centralised zone for personnel to connect to 
information hosted across the organisation. Ensuring 
consistent knowledge management, iNSITE contains 
a native functionality which forces specific content 
through a defined review cycle, automatically archiving 
any data which passes that timeframe. With in-built 
compliance capability, key corporate content such 
as policies can be announced through a dedicated 
method which offers a detailed audit trail ensuring 
uniformity of knowledge companywide.
	– Our Dignity and Respect at Work Policy ensures a 
safe working environment for inclusion of all without 
discrimination and harassment. It includes a recourse 
for reporting any employee who contravenes this 
policy. In addition, Mercury has recently launched a 
number of quarterly initiatives to create awareness and 
further educate our workforce about key topics, under 
our Diversity and Inclusion programme, our first training 
of the year was titled “Unconscious Bias”.

7 
Sustainability Report 2022
EMBEDDING, MONITORING AND 
AUDITING OF OUR CORPORATE 
GOVERNANCE 
We ensure compliance with relevant laws and regulations 
in jurisdictions so that our employees are aware of 
relevant guidelines and conduct themselves accordingly.
We are committed to the adoption and promotion 
of good corporate governance approaches in all our 
business activities. This includes providing a safe and 
sustainable environment for clients, staff, contractors, 
and suppliers, as well as fulfilling our responsibilities as a 
member of the local community and society, to ensure we 
make a positive social impact.
To ensure our commitments are adopted and embedded 
in our practices, we have implemented a number of 
processes, as well as appropriate monitoring and review 
mechanisms such as:
	– Our Internal Audit function performs detailed internal 
audits across all significant sectors within the group, 
encompassing all key project and group activities.
	– Employee awareness and refresher training 
sessions are conducted on an on-going basis 
to ensure that employees know what our ethics, 
compliance and human rights policies are, and which 
behaviours are required in each case. Onboarding 
practices for new employees include basic human 
rights and ethics training. Specifically, we have 
developed several ethics related trainings on topics 
such as Code of Conduct, Conflict of Interest, Modern 
Slavery, Anti- Corruption, and Anti-Fraud. This ethical 
training is delivered periodically via a mix of on-line and 
in-person training. All training is housed on a dedicated 
Compliance & Ethics SharePoint page, that is available 
to all employees (including Senior Management) 
throughout the group. Training completion is tracked 
and non-compliance with training is reported to 
respective managers periodically.
	– EHS policies, procedures and systems ensuring safety 
at our construction sites: Key Safety performance 
indicators are reviewed and discussed for each 
Business Unit and Project on a monthly basis during 
project reviews as further detailed in Section 6.	 Being 
an employer of choice
	– Several HR policies specifically aim to ensure 
employees are treated with respect and they provide 
recourse channels for those who wish to report issues 
in this regard. KPIs tracked include the number of 
Diversity & Inclusion issues reported and the number 
that are closed out within the same year. Other KPIs 
including non-discrimination by gender, training and 
development hours and employee well-being are 
included in monthly sustainability dashboards as 
detailed further in Section 6. Being an employer of 
choice
	– Procurement policies and onboarding processes 
promoting responsible business practices: Status 
of reviews for top suppliers is included in quarterly 
sustainability dashboard metrics and the Ecovadis 
platform will be leveraged to facilitate performance 
monitoring as detailed further in Section 8.	 Maintaining 
Responsible Partnership 
	– The Document control function was upgraded in 
2022 including implementation of a new system and 
appointment of a Group Document Controller to 
manage associated processes going forward. A series 
of sessions were held with leaders and subject matter 
experts to introduce the planned improvements to our 
document control procedures. Further presentations 
and training were given to each department within 
Mercury as well as on-going support for migration to 
this new document control system. Surveys were used 
to obtain specific feedback from users in order to flag 
further changes, training and improvements needed. 
All these measures ensure that we not only have an 
efficient document management system in place but 
also that our information is governed and secure. 
	– Well-being of local communities (in locations we 
operate) aligned with Mercury’s UN SDGs supported 
mainly through our CSR programme. The programme 
and its budget are approved annually with Quarterly 
progress reports as further detailed in Section 9.	
Well-being of local communities.

8 
4.	 OUR
	
SUSTAINABILITY
	
STRATEGY
Our Sustainability & Responsible Business 
policy outlines the resources that we 
put behind our commitment to ensure 
we maintain alignment between our 
goals and our actions. As outlined in our 
Beyond 50 long term strategy plan, we 
apply the principles of Integrity, Inclusivity, 
Legacy, Stewardship and Transparency 
with a commitment in all aspects of our 
global business to deliver continuous 
improvement in areas of environmental, 
economic, and social sustainability.

9 
Our focus areas align with the following United Nations 
Sustainable Development Goals (UN SDGs)
For further information referer to: 6. Being an employer of choice; 7.	 Minimising our environmental footprint; 8. Maintaining 
responsible partnerships; 9. Well-being of local communities
UN SDGs Mercury’s 
Sustainability Strategy 
aligns with
Our commitment
Some of our key actions
Supporting local jobs
Pay fairly
Supporting local communities
Local recruitment
Sectoral agreements, regular pay reviews, and benefits
Suppliers/Subcontractors Code of Conduct and audits
Financial support to local initiatives
Supporting local jobs
Pay fairly
Supporting local communities
Financial support to local charitable organizations
Health & Safety
Employees well-being
Safety training and “Work safe, Home safe” campaign
Employee Assistance Programme
Partnerships with charities promoting mental health/cancer research
Financial support to local sports clubs
Learning & Development
Training programme and dedicated platform for all employees
Apprenticeship investment & Apprentice Development Centre
Graduate, Leadership Development, Educational Assistance and Scholarship programmes
Financial and material support to local schools or initiatives
Equality
Diversity
Inclusion
Diversity tracking and targeted recruitment
Investors in Diversity survey participation and alignment, Work180 endorsement
Elevate pledge signatory and alignment
Suppliers/Subcontractors Code of Conduct and audits
Supporting local jobs
Pay fairly
Responsible partnerships
Local recruitment
Sectoral agreements, regular pay reviews, and benefits
Suppliers/Subcontractors Code of Conduct and audits
Equality
Diversity
Inclusion
Diversity tracking and targeted recruitment
Investors in Diversity survey participation and alignment, Work180 endorsement
Elevate pledge signatory and alignment
Suppliers/Subcontractors Code of Conduct and audits
Energy efficiency
Responsible water use
Responsible waste practices
Energy efficiency investments (LED lighting, sensors, timers, etc.)
Embodied Carbon Calculator (EC3)
Trials and investment in electric or hybrid vehicles and machinery
Implementation of new water-efficient flushing methods
Reduced GHG emissions
Biodiversity
CDP disclosure and footprint reductions, setting of targets
Internal and external awareness
Decarbonisation initiatives e.g. switch to renewable energy supply, digitisation and 
others (see above)
Biodiversity
Responsible water use
Responsible waste practices
Implementation of new water-efficient flushing methods
Biodiversity
Reduced GHG emissions
Responsible waste practices
All-Ireland Pollinator Plan 2021-2025 programme
Orchard in the Community programme ref SDG 12 and 13
Inclusion
Financial support to local charitable organisations

10 
Sustainability Report 2022
In light of the material topics impacting our business, our stakeholders, and the world around us, we have 
prioritised our efforts into four Sustainability Duties:
All Mercury’s stakeholders play an 
important role in supporting our strategies 
and decisions and their support has a 
significant impact on achieving outcomes 
that help us achieve our sustainability 
goals. Therefore, Mercury regularly 
engages with each of these groups, 
gathering materiality feedback from 
stakeholders helps us understand what 
to disclose in our annual report, as well as 
informing our business and ESG strategy.
FOCUS AREA
KEY TOPICS
SUSTAINABILITY DUTY
EMPLOYEES
VALUE 
CHAIN
LOCAL 
COMMUNITIES
Being an 
employer of 
choice
Maintaining 
responsible 
partnerships
Local 
community 
well-being
	- To continue to attract and retain the best talent into the 
future, it is our duty to be recognised as a safe, diverse, and 
inclusive employer, offering equal opportunities, and investing 
in the wellbeing and development of our employees.
	- To continue to deliver our clients’ needs and expectations, it is 
our duty to conduct our business in a sustainable, fair, and ethical 
manner. This can only be achieved by ensuring all our suppliers 
and subcontractors and our overall supply chain adhere to similar 
strict standards.
	- It is our duty to positively contribute to the well-being of the 
local communities we operate in. We do so by offering local 
jobs and supporting relevant initiatives aimed at improving 
the lives of of those in our local communities.
ENVIRONMENT
Minimising our 
environmental 
footprint
	- To mitigate the impact of climate change, it is our duty to 
take meaningful actions to minimise our direct and indirect 
greenhouse gas emissions, our waste, the consumption of 
other resources and maintain biodiversity.
OUR 
SUSTAINABILITY 
DUTIES

11 
Sustainability Report 2022
5. 	OUR
	
STAKEHOLDER
	
ENGAGEMENT
Materiality Assessment Renewal
Materiality assessments are a formal and essential part of 
any company’s ESG journey. They identify the areas that 
matter most – such as those affecting key stakeholders 
– and that we fulfil our sustainability goals. Mercury 
undertook an initial Materiality assessment in 2020 and 
conducted a new assessment in 2022 to ensure our ESG 
strategy remains relevant and aligned, with input from 
our key stakeholders. This fresh assessment reinforced 
the position of “Health & Safety” as our chief material 
topic. While it confirmed the continued importance 
of “Anti-corruption”, “Learning & Development” and 
“Human Rights” topics, it also clearly demonstrated the 
growing significance of “Privacy & Data Security”, “Energy 
Management”, “Waste Management”, and - not least - 
“Low Carbon” topics.
Materiality Assessment renewal process 
The purpose of the materiality assessment renewal was 
to determine the priority of a wide range of sustainability 
topics (Environmental, Social and Governance) for 
Mercury from the perspective of our executive team, 
employees, and clients. The results of the new 
assessment were used to ensure Mercury’s strategy 
remains relevant and aligned with interests of key 
stakeholders and what they value most at this time. 
The process involved 25 topics being identified – 10 
Environmental, 9 Social and 6 Governance related. These 
topics were selected by reference to the UN Sustainable 
Development Goals (SDGs), the Sustainability Accounting 
Board (SASB) and the Global Reporting Initiative (GRI). 
The 2020 materiality assessment topics were also used as 
reference in the final list of topics used in the assessment.
Distributing questionnaires to invitees from key 
stakeholder groups, they were asked to rate the 
importance of the topics from their perspective based on 
the following rating scale:
	– Critical - A top-priority. “If we don’t manage this well, 
it will have a serious negative impact on our business 
strategy.”
	– Very important - “It is very important for the business 
to manage this well but not as critical to the success of 
the business strategy.”
	– Important - “It is important that this is managed well, 
while not critical or very important to the business, it 
should be a cause of concern for senior management 
and stakeholders would be disappointed if the 
business didn’t do a good job here.”
	– Less Important - “We expect the business to take the 
right approach, but this is not a major concern for the 
business.”
	– I’m unsure - “I don’t know much about this matter, but 
it may be important for someone else”
Mercury undertook its initial Materiality assessment in 2020 and conducted a new 
assessment in 2022 to ensure our ESG strategy remains relevant and aligned, with input 
from our key stakeholders.

12 
Sustainability Report 2022
A weighted scoring system was used to achieve an 
overall score per topic, these scores were then plotted on 
a graph creating the figure shown on the next page.
The results of our 2022 Materiality Survey highlights 
the order of the 8 highest priorities as chosen by 
respondents:
1.	 Health and Safety
2.	 Privacy and Data 
Security
3.	 Anti-Corruption
4.	 Energy Management
5.	 Waste Management
6.	 Low Carbon
7.	 Learning and 
Development
8.	 Human Rights
Below is a graphic representation of the materiality assessment renewal results for 2022. 
Relative to our 2020 results, Health and Safety has 
retained its position as our stakeholders’ leading priority. 
Anti-corruption ranks in 3rd place, and Human Rights in 
8th place also retained their relative positions from the 
previous matrix. Meanwhile, Privacy and Data Security 
(which did not feature in our 2020 survey) has emerged 
as stakeholders’ second most important focus area. 
Prioritisation of low carbon noted the most significant 
shift between 2020 & 2022. View the results of our 2020 
materiality survey here: https://www.mercuryeng.com/
about/sustainability-statement/
We devoted a considerable level of effort over recent 
months to capture results related to achieving low 
carbon, efficient energy management, and responsible 
waste management. This has been pioneered by 
our Sustainability team through the utilisation of an 
environmental impact and carbon emission tracking 
platform.
A refreshed materiality assessment is fundamental to our 
sustainability approach because it allows us to identify, 
understand and prioritise the social and environmental 
risks and opportunities that are important to our 
stakeholders and helps us focus in delivering outcomes in 
those areas.
1.	
Health and Safety
2.	
Privacy and Data Security
3.	
Anti-Corruption
4.	
Energy Management
5.	
Waste Management
6.	
Low Carbon
7.	
Learning and Development
8.	
Human Rights

13 
Sustainability Report 2022
Clients
Our partners require certainty in terms of project 
outcomes, and we partner with them to achieve their 
sustainability objectives while delivering leading edge 
projects. Being a responsible business partner, we aim 
to continue supporting client needs and requests and 
ensuring compliance with Mercury’s value chain while 
conducting our business with integrity in a sustainable 
manner.
Employees
Mercury employees want to see a clear strategy and 
being kept safe and healthy at work is the leading priority 
with many sustainability related topics ranking important 
to our people. 
In 2022, we built on the momentum generated last year 
by highlighting aspects of our key duties with quarterly 
on-line events led by leaders and subject matter experts, 
which helped to ensure that there was consistent 
knowledge about our sustainability initiatives group wide. 
Suppliers
Our supply chain partners are keen to maintain a 
mutually beneficial relationship with Mercury whereby 
collaboration, open communication and support are 
crucial.
Our Tier One suppliers are asked and encouraged to 
make ESG disclosures through the Ecovadis platform. 
We also continue to ask all our suppliers to provide EPD 
(Environmental Product Declarations) for products sold 
to Mercury and/or installed at our project sites. While it 
is understood that suppliers in the EU may not all have 
EPDs yet, Mercury is committed to engage with suppliers 
to support their efforts towards disclosing embodied 
carbon associated with their products.
Using the EC3 carbon calculator tool, Mercury calculates 
embodied carbon for planned structures as well as 
completed structures for clients as needed. The EPDs are 
an important part of obtaining high accuracies in those 
calculations for the EU region.
In 2022, Mercury upgraded its policy regarding new 
suppliers and subcontractors’ due diligence. This 
included an updated pre-screening questionnaire for new 
contractors with a systematic link to our ERP system (i.e. 
resulting in automated “flags” and automatic suspension 
until potential issues are addressed). This due diligence 
process covers business topics including Human 
Rights, Labour Management, EH&S, Cyber-security, and 
Sustainability.
Communities
Communities located near our construction sites are 
invested in the quality of the projects we complete and 
the way we approach project delivery. We are dedicated 
to making a positive impact and giving back to the 
communities we operate in through local employment 
and our corporate giving efforts; whereby local 
organisations benefit from our support which address the 
United Nations’ Sustainable Development Goals. Mercury 
supported over 40 non-profit organisations and charities 
in 2022.

14 
Sustainability Report 2022
6.	 BEING AN
	
EMPLOYER
	
OF CHOICE
Mercury has worked hard to create a workplace for all 
current and future employees which implements these 
goals to ensure a better overall working environment. 
Yet, without the appropriate safeguards, the construction 
industry can be prone to perpetuate a cycle of inequality. 
Our ability to operate and grow is very much dependant 
on our ability to retain and hire the necessary workforce. 
Competition for new talent is high, and recruiting future 
leaders or experts is no easy task. Most candidates are 
progressive and passionate about sustainability and 
demand positive actions in this regard. So, to become 
their employer of choice, we are taking conscious actions 
to address challenges in this area and achieve these 
goals.
All Mercury employees have written contracts which 
comply with local labour laws. This contract includes 
starting date, workplace address and working times, 
duration of contract, personal leave entitlement and 
where employees can find out more about other 
leave entitlements, remuneration, probation periods (if 
applicable), and notice periods for both employer and 
employee in case of termination initiated by either party. 
Furthermore, all our Trades employees are covered by 
the Sectoral Employment Order for Construction Industry 
and receive mandated applicable rate of pay. All salaried 
employees receive annual salary reviews. All employees 
have access to the HR business partner assigned to their 
department to get questions answered in a traceable 
manner.
 
As part of its agenda for Sustainable 
Development Goals, the United Nations 
has identified “reduced Inequalities”, 
“gender equality”, “quality education”, 
“good health and wellbeing” and “decent 
work and economic growth” as some 
of the key drivers. The benefits of these 
sustainable development goals play a 
crucial role in attracting and supporting 
employees at Mercury.

15 
Sustainability Report 2022
A. OCCUPATIONAL HEALTH & SAFETY 
AND EMPLOYEE WELL-BEING
One fifth of all recent fatal accidents at work in the EU-27 
took place within the construction sector2 making it vital 
in our industry to pay close attention to safety at work. 
Common construction site hazards such as working 
alongside large mobile equipment, handling heavy 
materials, working at height or electrical connections can 
indeed cause trips, falls, materials drops or collapses, 
among other accidents. Other aspects of construction 
work such as noise, vibrations, physical work, heavy 
lifting, potential exposure to dust particles and other 
hazardous substances can also cause ill health.
Using appropriate systems, procedures, training, and 
oversight most accidents can be prevented, or their 
frequency and severity dramatically reduced. Therefore, 
Mercury has made “Safety” its anchor value and “Work 
safe, Home safe” its motto. Working safe isn’t just our 
policy, it’s our duty.
Unequivocal Commitment
It is the policy of the company, as framed by its directors, 
to do all that is necessary to observe and comply with 
all the requirements whether existing or new, related 
to the Health and Safety Legislation in any region the 
company operates in. We will continue to provide working 
conditions that are safe and healthy. With the full support 
of our employees and supply chain partners we are 
confident in achieving these aims.
Mercury is committed to providing the necessary 
resources to ensure that management systems, statutory 
and group procedures and policies are adhered to by 
all personnel within the group. Mercury’s policies are 
communicated to all employees during induction training 
both in head office and on construction sites. It is the 
responsibility of all personnel to intervene if they perceive 
something to be an unsafe or a potential issue and to 
“Find & Fix” each issue as it arises. Adherence to the 
procedures & policies of Mercury is monitored by EHS 
team members, all supervision, and senior management.
In addition to the “Find & Fix’’ programme mentioned 
above, Mercury launched its Modern Slavery training in 
2022, with over 50% uptake in the training across the 
organisation. With modern slavery being an underlining 
issue within the construction sector it’s important that our 
employees are aware of how to identify potential modern 
slavery and are aware of how to report it. Our aim for 
2023 is to move this to mandatory training, along with 
further human rights policies to be issued.
ISO 45001 Occupational Health & Safety 
(OH&S) Management System
The basis of Mercury’s OH&S management is its 
Management System, and the company is compliant 
and certified to ISO standard 45001:2018 Occupational 
Health & Safety Management System. Besides offering 
a guarantee of compliance with all current OH&S 
legislations worldwide, this standard requires that OH&S 
risks be addressed and controlled to ensure a safe and 
healthy workplace for all employees and visitors.
Here is a snapshot of our Safety achievements:
	– In 2022, Mercury completed just under 40,000 
Environmental, Health & Safety (EHS) Audits as part of 
our overall safety strategy. 
	– 91,797 hours of EHS training was recorded for 2022.
	– 2022 saw us improve on our Accident Frequency Rate 
(AFR) with a reduction of .01 from 0.06 to 0.05, well 
below the industry average (1.74 for construction and 
0.42 for all industries). Overall Mercury completed 10.5 
million hours worked, reportable injury free in 2022.
	– In 2022 Mercury launched the QEHSS Kiosk which has 
increased safety feedback and early interventions on 
our project sites.
2.	 https://ec.europa.eu/eurostat/statistics-explained/index.php?title=File:Fa­
tal_and_non-fatal_accidents_at_work_by_NACE.png

16 
Sustainability Report 2022
Safety Training
While recording and investigating incidents is a key 
element of our management system, preventing such 
incidents is our number one goal. Mercury’s primary 
tool to enable prevention is regular and mandatory 
safety training. As further detailed in the Learning & 
Development section of this report, safety training is 
an essential topic being addressed with all employees. 
To ensure that safety remains top of mind on site, we 
continuously do refresher training through toolbox talks 
and demonstrations at sites.
Employee Assistance Programme (EAP)
Every Mercury staff member, as well as their immediate 
families, has access to our Employee Assistance 
Programme (EAP). This service offers an independent, 
confidential, and complimentary counselling service to 
help support them through mental health issues, work-
related issues, bereavement, or any other life concerns 
– anywhere, any time. We consider this programme as 
our first line of defence when it comes to our employees’ 
potential mental health issues, and we consider every 
call made to the helpline as an opportunity to prevent 
potential harmful consequences.
Mental health first aiders
Since 2021, each month, Mercury delivers Mental Health 
First Aid (MHFA) training across its projects. MHFA is the 
assistance offered to a person who is experiencing or 
developing a mental health problem or crisis. This training 
allows our team to support each other until appropriate 
professional treatment is received or until the crisis 
resolves. The training has led to stigma-breaking mental 
health discussions throughout Mercury. Our aim is to 
create a culture where such conversations are the norm, 
rather than the exception. Since 2021 we have seen 
over double in the number of uptakes by employees on 
attending these courses, and over 1400 training hours 
recorded. 
2021
No. of employees enrolled 
UPTAKE OF MHFA COURSES
2022
0
50
100
150
200
167
67

17 
Sustainability Report 2022
B. DIVERSITY, INCLUSION
AND EQUALITY
Understanding the needs of Mercury employees means 
understanding their perspectives. We discovered that 
Mercury has some unique characteristics in terms of our 
workforce and the diversity it represents. During 2022 we 
had no formal Diversity & Inclusion grievances registered, 
and any informal grievances were resolved through 
mediations. 
A dedicated Diversity and Inclusion Policy
Diversity and Inclusion at Mercury are underpinned by 
our Dignity and Respect at work policy that ensures 
a safe working environment for inclusion of all without 
discrimination, bullying or harassment based on gender, 
race, sexual orientation, gender identity, disability status or 
any other protected characteristic. It includes a recourse 
for reporting any employee who contravenes this policy.
Fair Remuneration Process
Mercury uses local and internal compensation 
benchmarking during the hiring process to ensure that 
offers are realistic against market prices and existing 
compensation packages for comparable roles. Every 
year Mercury conducts a company-wide Salary Review 
process using the Success Factors platform. Managers 
consider individual increases based on an overall 
approved budget for his/her section/group. Data available 
includes individual performance evaluations and salary 
histories, managers can also compare individuals in his/
her group in similar roles using the Mercury Job Grade 
Structure. A compensation committee reviews the 
outcomes against budget and guidelines for the Salary 
Review process and reviews and approves monthly Out 
of Cycle Promotion proposals that meet guidelines.
This process applies to all Mercury employees who 
meet the criteria as set each year, which usually pertain 
to minimum time with the company and whether an 
employees’ salary increases are externally regulated. 
All our trade workers are paid according to sectoral 
agreements, which sets minimum rates of pay and 
pension and sick pay entitlements.
Healthcare and Pension for all
In 2022 Mercury announced updates to its Compensation 
& Benefits policy, where all salaried employees can now 
avail of a pension scheme and subsidised healthcare.
Our compensation and benefits structure are designed 
to attract, motivate, and retain talented employees who 
drive the company’s success while supporting our vision 
and values. 
Geographic Location
The project-based nature of our business means that the 
geographic location of staff on projects vary over time. 
Mercury’s head office is in Dublin and most group support 
roles are based in Ireland.
International Workforce
Our 3,400+ employees come from 65 different 
nationalities across the world, with another 3,900+ 
working on our projects through subcontractors. Within 
the 3400+ employees there is around 700 people working 
for Mercury on a contract basis (i.e., “Agency workers”). 
Worker figures are recorded on the first day of each 
month, recording the number of employees held on the 
previous day. 
Gender Profile
Including trades people, 11% of our workforce include 
women, an improvement of 1% from 2021. 5% of the 
company’s senior executives are women. Female hires 
as a percentage of all hires in 2022 maintained at 16% 
compared to 2021,and women formed 30% of the 2022 
graduate intake (up from 7% in 2020 & 20% in 2021). 
The number of female apprentices grew in 2022 by an 
additional 10% to 33%. Our retention rate for female 
employees stands at 99% as of the end of 2022, a rate 
we have maintained from 2021. It tells us that, with

18 
Sustainability Report 2022
10’s (teens)
71
1,017
1,131
Range
735
412
126
20’s
30’s
40’s
50’s
60’s
0
200
400
600
800
1000
1200
Ages Ranges (excl subcons)
focus, improvements towards parity are possible and we 
need to keep finding new and innovative ways to attract 
and source new hires from under-represented groups, 
especially in trades.
Women in management roles (as of Q4-22): 17 women 
out of 336 staff are in management positions.
Grow our own
We have reviewed our strategy and now have a focused 
effort on what we call a ‘Grow our Own’ Agenda with 
emphasis on achieving this via our graduate programme 
and apprenticeship programme. We started our graduate 
programme with 7% female representation in 2020, that 
went up to 20% in 2021 and as of 2022, our graduate 
programme has a 27% female representation. Female 
representation in the apprenticeship programme has 
grown by over 200% between 2020 and 2021 and 
by 33% in 2022. Retention of our female employees 
remains at 99% and we predict that we will see a 
representation increase across professional levels up to 
senior management level in the next five years, as we 
focus on our ‘Grow Our Own’ agenda. We are committed 
to removing barriers for women at entry point as well as 
ensuring that they are supported at different stages of 
their professional careers.
Age Profile
From a generational perspective, over 60% of Mercury 
employees are from the ‘‘Millennial’’ generation and 
the average age at Mercury is 37 years old. It is not 
surprising therefore to note that there is a strong culture 
of innovation, improvement, inclusion and knowledge 
sharing at Mercury. This helps us to ensure we deliver the 
expectations of our clients with certainty, time and time 
again.
Employees by Age and Gender
The graph shows the % of each gender distributed over 
the age categories shown below.
Employee set 
(incomplete)
3.492
Average Age
37
Range
0%
10’s
(teens)
60’s
50’s
40’s
20’s
30’s
32%
29%
21%
12%
4%
2%
%GT OP Active
Note: DOB is not applicable for all employees
10%
20%
30%

19 
Sustainability Report 2022
3,503
OP Active
Female
386 (11%)
Male
3,117 (89%)
Employees by Gender
0%
50%
100%
ADTV
94%
96%
53%
87%
82%
83%
88%
6%
4%
47%
13%
18%
17%
12%
LENV
GROUP
HDC
CDI
DCBS
EDC
Female
Male
OP Active
Diversity and Inclusion Achievement
A D&I survey helped to solicit feedback from employees 
regarding their experience and impression of our D&I 
practices in the workplace. 
Covering the principles, behaviours, conduct, attitudes, 
and beliefs of staff, we are now able to map out very 
specific improvement goals and activities for the coming 
12 months.
We were delighted that for 2022 we maintained our 
“Investors in Diversity - Silver” rating. Since then, we 
have taken actions to improve awareness of desired 
behaviours by managers and other employees and have 
held a series of workshops at various project sites to help 
managers and supervisors understand implications for 
decision-making on a day-to-day basis. 
Embedding D&I in our Processes and 
Structure
Embedding diversity and inclusion involves listening to 
what employees had to say and understanding how 
people are experiencing the culture within Mercury and 
making strategic decisions to ensure our processes and 
structures facilitate a culture of diversity and inclusion. 
We are engaging with executive and senior leaders 
and are planning to implement further improvements to 
our workplace environment to ensure a fully inclusive 
employee experience. For instance, we updated some 
of our HR procedures and practices to ensure that all 
new hires receive critical training related to D&I while 
existing employees and managers receive annual refresher 
workshops or training courses to keep these principles 
fresh in their minds. In 2023 Mercury’s Quality, Diversity 
and Inclusion team will be implementing quarterly initiatives 
to further educate our workforce around key topics. 
Reduced bias training has been completed for executive 
managers and will continue to be rolled out to other mid-
to-senior level managers. This is especially important for 
decision-making on new hires, employee development 
and nomination to leadership courses, performance 
target setting and feedback.
Mercury has elected to pay parents whose partner 
recently gave birth or adopted  a child to full paid 
paternity leave.
We partner with organisations specialising in sourcing 
new hires from non-traditional groups to further increase 
the diversity of our workforce.

20 
Sustainability Report 2022
to support their career development. This solution 
allows Mercury employees to learn in flexible ways 
accommodating their personal pace preferences and 
schedules. 
Wide variety of Programmes and Courses
Mercury offers a variety of courses at all levels of the 
organisation:
	– Graduate programme
	– Leadership Development programme for mid-senior 
level managers
	– Educational Assistance programme offering employees 
the opportunity to further their education
	– Scholarship programme (for trades after their 
apprentice period is completed)
Our learning programmes cover a large variety of topics, 
including:
	– Safety: Supervisor training (SVSM), working at heights 
- “stop the drop” – avoiding falling hazards, Manual 
handling, MSP – behavioural.
	– Company-wide: Diversity & Inclusion, Cybersecurity, 
GDPR requirements, Performance Management, Data 
protection.
	– Leadership effectiveness: effective meetings, 
motivation of others, leading, empathy, staff retention, 
risk management.
	– Personal effectiveness: time management, planning, 
work-life balance, problem-solving.
	– Soft skills: negotiations, dealing with difficult people, 
conflict management, communicating difficult 
messages, critical thinking.
	– Specific: construction management, BIM (Building 
Information Modelling), Revit.
Mercury’s Apprentice Development Centre – which 
opened its doors in 2020 – is a purpose-built facility 
designed to train apprentices in a safe and adapted 
environment, away from the distractions and risks of any 
live construction site environment.  
C. LEARNING AND DEVELOPMENT
Because our greatest asset is our people, it is our policy 
to recruit and train all staff from apprentices to qualified 
engineers, a policy that has kept many of them with 
Mercury since the company’s earliest days.
As mentioned previously in this report, we operate in a 
very competitive market when it comes to attracting and 
retaining talent. From developing highly skilled experts 
to managers and supervisors who are ready to lead, 
we need to continuously deliver to ensure we have a 
pipeline of staff who are promotion-ready and competent 
to function at the next level at Mercury. We use our 
Performance Management Process to communicate 
performance expectations and later provide feedback 
on performance goal achievements. Our online Personal 
Development Plan tool helps employees complete 
a gap analysis and set priorities in developing their 
competencies to meet or exceed expectations.
In 2022 we hired and held 65 new apprentices to add 
to our 220 apprentices held previously rolling into 2022, 
therefore bringing our number of apprentices held to 
285 for 2022 of which 15 are female. Regardless of the 
position or seniority of employees, Mercury continues 
to invest significantly in training. In total, we registered 
110,237.5 hours of training in 2022 (including EHS 
training, online training, classroom, workshops, online 
events, and other training). This represents an average of 
32.4 hours per employee for the year.
Learning Platform
Mercury training and off-the-shelf external training is 
available on demand from our LinkedIn Learning platform 
and learning paths are available to our employees

21 
Sustainability Report 2022
7.	 MINIMISING OUR 
	
ENVIRONMENTAL 
	
FOOTPRINT
Alignment to the Taskforce on Climate-
Related Financial Disclosures (TCFD)
The Taskforce on Climate-Related Financial Disclosures 
(TCFD) is a framework which requires companies to 
disclose their climate risks & opportunities under the 
headings of governance, strategy, risk management, 
and targets & metrics. To ensure transparency, Mercury 
continues to address the impact of its climate-related 
risks & opportunities through its annual CDP submission 
and through our internal Risk Management processes.
Governance
As outlined in Section 3, our sustainability strategy 
and performance are overseen at the most senior level 
– the Board of Directors. This strategy is developed, 
implemented, and reviewed by the executive 
management team and sustainability champions from 
across the business.
“As a significant player in the construction 
industry, we recognise both the impact 
we have on current emissions and the 
importance of meaningfully reducing 
these.”
Mercury’s validated Science Based Target 
(SBT)
Mercury formally committed to setting a Science Based 
Target (SBT) in July 2021. Following on from this, 
Mercury underwent a full Scope 3 screening to get a 
comprehensive baseline of company emissions. Having 
spent months developing our SBT in line with criteria, and 
subsequently submitting to the Science Based Target 
Initiative (SBTi) for validation in March 2022, Mercury is 
proud to present the following Science Based Targets 
validated by the SBTi and published in January 2023:
	– Mercury commits to reduce absolute scope 1 and 2 
GHG emissions 22.5% by 2030 from a 2021 base year. 
	– Mercury commits that 77.4% of its suppliers by spend 
covering purchased goods and services, will have 
science-based targets by 2027.
As a leader in the construction industry, we recognise 
both the impact we have on current emissions and the 
importance of meaningfully reducing these.
Based on our verified assessment – according to 
standard ISO14064-3 – our total CO2e emissions for 
the period 2022 in the Scope 1 and 2 we directly control 
(ref: GHG Protocol) was 1,871 tCO2e (Market-Based) or 
2,067 tCO2e (Location-Based). In comparison with the 
previous year Location-Based emissions, this represents 
an increase of nearly double the emissions recorded 
from 2021, 866 tCO2e (Market-Based) or 1,078 tCO2e 
(Location-Based) however we can see an increase in 
the quality and quantity of data that is being collected 
and recorded compared to 2021.This will provide an

22 
Sustainability Report 2022
invaluable baseline to benchmark our emission data going 
forward, as the data is completely unique to Mercury we 
are currently unable to compare to that of our competitors 
or measure how our actions towards a more sustainable 
business affect this data until now.
Verified statement of Reasonable assurance of 
Mercury’s 2022 emissions data (according to ISO 
– 14064-3:2019 Specifications with Guidance for
the Validation and Verification of Greenhouse Gas
Statements)
SCOPE OF EMISSIONS
TOTAL EMISSIONS 
2022 (TCO2E)
Direct Emissions (Scope 1)
1,854
Indirect Emissions Location-Based 
(Scope 2)
213
Indirect Emissions Market-Based 
(Scope 2)
17
Other Indirect Emissions (Scope 3) - 
Purchased Goods & Services
45,139
Other Indirect Emissions (Scope 3) 
- Fuel-and-energy-related activities
(not included in Scope 1 or 2)
460
Other Indirect Emissions (Scope 3) - 
Business Travel
2,751
Other Indirect Emissions (Scope 3) - 
Waste Generated in Operations
265
Other Indirect Emissions (Scope 3) - 
Employee Commuting 
6,778
Other Indirect Emissions (Scope 3) - 
End of Life Treatment of Sold Product
12,238
B
Our CDP score
C
B
C
Construction
Europe
Global Average
Average Performance
Ecovadis Sustainability Raking
For the second year running, Mercury received a silver 
badge of recognition for our sustainability efforts from 
Ecovadis, the world’s largest provider of business 
sustainability ratings. Mercury improved by six points 
overall in our rating from last year, and ranked above the 
construction industry average in every category, ranking in 
the top 25% of companies audited on the platform.
Carbon Disclosure Project (CDP)
We have for a second year running, voluntarily 
participated in the Carbon Disclosure Project (CDP) and 
we have maintained a “B” score for our Climate Change 
Report 2022 for the period 2021 (the third highest 
possible score after A and A-). Our score reflects our 
unwavering commitment to transparency in our reporting 
and reducing greenhouse gas emissions. 
Mercury received a B which is in the Management band. 
This is the same as the Europe regional average of B, and 
higher than the Construction sector average of C.
Going forward, Mercury is striving to move up to the 
Leadership band “A” and believes its recent efforts to set 
a Science Based Target will contribute to edging closer.
Decarbonisation Progress
Having submitted and had our carbon reduction targets 
verified and approved by the SBTi in January 2023, we 
now have a clear understanding of the targets we need 
to meet or exceed. We created a formal decarbonisation 
pathways document which is helping us plan and track 
our progress in reducing our carbon footprint accordingly. 
Reporting
Apart from our annual CDP response, our internal 
sustainability and finance teams have collaborated to 
create a PowerBI dashboard with filters going from 
project level to group level reporting. This report helps our 
project leaders and managers make better decisions on 
projects considering the impact their decisions have on 
environmental outcomes.

23 
Sustainability Report 2022
Energy Consumption
The following table summarises the consumption of 
energy by Mercury for the period 20223:
KPI NAME
KPI PERFORMANCE
KPI UNIT
Quantity of electricity 
(mains) used
2,992,284.33
kWh
Quantity of natural gas 
(mains) used
35,127.00
kWh
Quantity of red diesel 
used
34,699.00
Litres
Quantity of petrol used
20
Litres
Quantity of white 
diesel used
590,775.00
Litres
kgCO2e from energy 
use (all scopes)
2,890,204,48
KgCO2e
LEAN
Our LEAN practices and approaches enable us to avoid 
waste, save time, and improve safety by decluttering 
and decongesting our construction sites. Our suppliers 
have, for instance, removed packaging from delivered 
supplies and reused them. Other sustainable and safe 
practices that resulted from LEAN projects included using 
rechargeable lights and battery-operated tools.
Among the founding members of the Lean Council of 
Ireland, Mercury has developed a set of best practices to 
eliminate waste across multiple aspects of the business. 
Measurable value is added to sustainability and is 
available for peer and client review.
Mercury implements sustainable waste management 
plans on all projects to minimise waste generation.
Waste Management
As a responsible builder, Mercury is committed to 
reducing its impact on key resources, including materials, 
by designing around circular economy principles and 
working with its supply chain to achieve construction 
waste reduction. Mercury implements sustainable waste 
management plans on all projects to minimise waste 
generation. The project teams work in interdisciplinary 
teams to put together a waste management framework: 
designers, procurement, site managers, logistics 
managers, material controllers.  Each of them plays an 
important role in the responsible sourcing, storage and 
disposal of materials, from sustainable design, correct 
bill of materials, to material protection, and possible 
use and reuse. All projects worth more than €10 million 
measure and report on their major waste streams and 
set targets for reduction, reuse and recycling.  Waste 
disposal is carried out in accordance with all regulations 
and company Environmental management system “EMS” 
certified safety management system ISO14001: 2015 
Environment and OHSAS 18001:
2007 Safety Standards by British Standards 
Institute (BSI). 
The 2022 waste management target was at least 80% 
diversion from landfill of the most important material flows: 
commingled waste, wood, metal, packing materials, hard 
plastic pipes and concrete.  We have also invested in new 
data collection software to improve monitoring, reporting 
and definition of more accurate and realistic goals.  
We managed to monitor our emissions resulted from 
waste generation and removal:
13K
Total Tonnage
98.42%
Total diversion 
from landfill
3.	 While Mercury is procuring a vast majority of its electricity from suppliers 
offering 100% renewable energy (i.e. market-based perspective), given Ire­
land’s renewable energy mix for electricity supply, it is estimated that – from a 
location-based stand point -  882MWh out of the 2,999MWh reported above 
came from a renewable source.

24 
Sustainability Report 2022
CO2 Emissions from Group Waste Management
Business Unit Name 
kgCO2e from waste 
management (scope 3) 
(kgCO2e)
kgCO2e from waste 
landfilled/disposed (kgCO2e)
Actual
Actual
Group Level Total
Mercury Engineering
72,495.52
12,961.81
Critical Data Infrastructures
15,171.39
0.00
Data Centres & Building Services
33,842.67
2,840.95
Enterprise Data Centres 
7,380.43
0.00
Head Office
470.22
0.00
Hyperscale Data Centres
15,630.80
10,120.86
2021
2022
2023
290,704 lb of carbon emissions reduced
364,671 gal of water conserved
123,850 lb of wood saved
20,125 lb of waste eliminated
ENVIRONMENTAL SAVINGS
Mercury: subcontractors’ environmental savings

CASE STUDY: HYPERSCALE 
DATA CENTRE PROJECT
The team on this project have proven how 
efficient the waste management procedures 
are when applied since day one of the project. 
Mercury operates as a GC with a responsibility of 
sustainable removal of waste. The project team 
have allocated enough space for the recycling 
area, using visible, bilingual signage. The waste is 
segregated on site and transported to the waste 
facilities by authorised companies. The waste 
plants have been carefully selected as the project 
is subject to a LEED certification process. The 
results for 2022 are impressive, with a 96% 
recycling rate. Total waste tonnage was 3335, 
537 and 3204,887 tonnes recycled. The new data 
collection software is updated in real-time with 
each waste collection.
25 
Sustainability Report 2022
Water consumption on sites
To reduce indoor water usage by 20%, we strive to 
implement strategies like installing toilets with dual 
flush valves, reducing the water tap flow and by strictly 
monitoring the water consumption. We also advocate 
to our clients the use of the green vegetated roofs using 
native or adaptive plants that do not require significant 
irrigation and that can also reduce the heat island 
effect. Together with our clients, we have managed to 
implement rainwater harvesting systems so that we can 
use greywater for toilets and irrigation. Wherever possible, 
we recycle the grey water, and we use it for the wheel 
washers, or other dust control processes.
All water coolers in our head office in Sandyford have 
been connected directly to the water mains to avoid the 
waste of water in containers trucked to and away from a 
building to stock coolers. We have also chosen to plant 
more native trees and shrubs around our building which 
are more attuned to the natural water available in the area 
and as such does not make high demands on limited 
water supplies like non-native vegetation is prone to do. 
Other environmentally driven actions in 
2022 and beyond:
Environmental Awareness Webinars
To raise awareness across the whole organisation, we 
have hosted a series of webinars that were available to 
employees in person. Recordings were made available 
to those who were unable to attend. These involved 
subject matter experts within our business on different 
topics such as environment, green supply chain and 
more, coupled with guest speakers such as sustainability 
experts.
Sustainable IT at Mercury
In support of “Our Planet, Our Duty”, we have 
incorporated sustainability into our IT policies and 
practices, tracking specific KPIs to contribute toward the 
reduction of Mercury’s carbon footprint. Our ethos is to 
Reduce, Reuse, Reimage and Recycle. 
	– Reduce: Printing usage is tracked by quarter for 
each site and office location allowing management 
to understand their teams’ usage trends and drive 
reductions where possible.
	– Reuse: New hardware is only procured when a piece 
of equipment has reached the end of its lifespan. When 
employees move on, their equipment is reassigned to 
another employee.
	– Reimage: We now deliver reimaging of laptops 
remotely which has reduced travel requirements for 
our IT team, thereby reducing carbon emissions for car 
and flight journeys. 
	– Recycle: Responsible recycling of IT equipment is 
crucial to ensure chemicals such as lead, mercury and 
cadmium aren’t released into water or air. We work 
with partners to ensure our IT equipment is recycled in 
an appropriate manner.

26 
Sustainability Report 2022
Climate Related Scenario analysis
Mercury has conducted both a transitional scenario 
analysis and a physical climate scenario analysis, results 
of which have influenced Mercury’s strategy and its 
financial planning.
Mercury conducted a transitional scenario analysis 
using the IEA NZE 2050 scenario, which brings energy-
related carbon dioxide emissions to net zero by 2050 
and gives the world an even chance of limiting the global 
temperature rise to 1.5oC. This was a qualitative analysis 
where Mercury reviewed the policy milestones from 2025-
2050 within this scenario to identify if any material risks 
or opportunities would arise. The milestones which were 
most relevant to Mercury were:
	– Retrofit of existing buildings to zero-carbon-ready 
levels
	– Phasing out of internal combustion engine sales and 
increase of electric vehicles
	– Decarbonisation of heavy industry (which relates to 
manufacturers of building materials Mercury uses)
Mercury conducted their physical scenario analysis 
using the RCP 8.5 scenario. RCP 8.5 refers to the 
concentration of carbon that delivers global warming 
at an average of 8.5 watts per square meter across the 
planet. The RCP 8.5 pathway delivers a temperature 
increase of about 4.3oC by 2100, relative to pre-industrial 
temperatures. This was a qualitative analysis where 
Mercury reviewed the high-level impacts within this 
scenario to identify if any material risks or opportunities 
would arise. The impacts which were most relevant to 
Mercury were:
	– The increasing frequency of severe weather events, in 
particular flooding, heat waves, storms, and high winds
	– Sea level rise
	– Increased water scarcity
	– Risk to critical infrastructure, in particular transport 
infrastructure
	– Migration of people due to presently densely populated 
areas becoming unsafe or unhabitable
Strategy
Climate risk is a key topic within the environmental focus 
area of our sustainability strategy. Some of the risks 
associated with climate change and the potential impact 
on the business can be grouped as follows: Current 
Regulation, Emerging Regulation, Technology, Legal, 
Market, Reputation, Acute Physical and Chronic Physical. 
This contrasts with some of the opportunities climate risk 
present to our business, such as Resource Efficiencies, 
Technological, Lower emission energy sources, Increased 
Sales, Competitive differentiator, Recruitment and 
retention.
Targets & Metrics
Mercury is proud to present the following Science Based 
Targets validated by SBTi and published in January 2023:
	– Mercury commits to reduce absolute scope 1 and 2 
GHG emissions 22.5% by 2030 from a 2021 base year 
	– Mercury commits that 77.4% of its suppliers by spend 
covering purchased goods and services, will have 
science based targets by 2027
Mercury has been measuring and reporting its carbon 
footprint since 2019, the above targets now allow us 
measurable objectives to actively work towards to 
achieve and provide clear goals for the company.
Risk Management
Our EHS Team have ownership surrounding the 
identification, monitoring, and tagging of ESG risks for our 
Risk register. Quarterly risk reviews take place within the 
EHS team and wider applicable departments surrounding 
these risks to ensure they are effectively monitored 
and actioned upon if necessary. An additional review 
then takes place between the Corporate Risk group 
and various Group Functions & Operational Business 
Units along with the EHS Team to ensure companywide 
awareness of these ESG risks. Within these quarterly 
reviews, the overarching risks are discussed and 
quantified from a sustainability standpoint but also a day-
to-day and regulatory view to ensure compliance.

27 
Sustainability Report 2022
Our EHS team deem the criticality of each risk identified, 
by assessing the base of the level of impact that may 
occur on operational, financial, reputational, sustainable, 
and strategic activities of Mercury. 
This is measured by the likelihood of the identified risk 
occurring based off a scale of 1 to 5 where “1” would be 
considered “Rare” with a likelihood of occurring of less 
than 10%, gradually up to “5” for “Almost certain” with 
a likelihood above 90%. The importance of each risk is 
then consolidated and rated considering both impact 
and likelihood on a scale from 1 to 5 from insignificant 
to severe importance. The evaluation grid also prioritises 
each of these risks across a short-, medium- and long-
term period.
Some of the climate-related risks identified by our risk 
management process include:
	– Changing temperature (impact on construction 
materials, heating/cooling equipment and energy 
efficiency)
	– Changing customer behaviour (move to lower carbon 
solutions)
	– Substitution of existing products and services with 
lower emissions options
	– Mandates on and regulation of existing products and 
services (incl. EU Taxonomy, CSRD and SFRD)
For each of these risks, Mercury is actively investing and 
taking practical steps to address or mitigate them. For 
example, requesting the supply of Environmental Product 
Declarations (EPDs) from suppliers is one action that 
contributes to addressing all the above.

28 
Sustainability Report 2022
8.	 MAINTAINING 
	
RESPONSIBLE
	
PARTNERSHIPS
Our CDP emissions disclosure highlights that the 
emissions generated by Mercury’s supply chain are 
notably more significant than Mercury’s direct emissions. 
We are actively engaged in conversations with our supply 
chain about the importance of working together towards 
zero emissions.
Besides environmental considerations, our supply chain 
maintains a substantial influence over social matters such 
as what we consider responsible work practices.
Engaging with our supply chain partners is crucial as 
we continue our sustainability journey – setting targets 
for ourselves and our projects, while holding our supply 
chain partners accountable with regards to ESG matters 
under projects they are responsible for. In this context, 
we believe we have both a duty and a capacity – through 
strong governance and aligned procurement practices – 
to positively influence the ESG impact and performance of 
our subcontractor partners and suppliers.
A cornerstone to the establishment of responsible 
partnerships is Mercury’s Code of Conduct for Suppliers 
and Subcontractors. The document outlines our 
requirements and expectations from our supply chain 
partners in key areas of business practices including 
regulatory compliance, anti-bribery and corruption, 
modern slavery, and fair competition. Suppliers 
and Subcontractors are expected to commit to the 
requirements contained in this document. While we 
will allow a certain period of adaptation and encourage 
compliance, we will take appropriate action to ensure this 
minimum alignment of commitment is achieved.
“We are actively engaged in 
conversations with our supply chain 
about the importance of working 
together towards zero emissions.”

29 
Sustainability Report 2022
Third party verification
Asking key value chain partners to participate in 
completing an annual survey questionnaire hosted on a 
third-party platform offers the benefits of being able to 
understand the strength that the aggregate outcomes 
bring to project execution. It also helps to understand 
any risks which may not have been evaluated yet – as it 
relates to the activities that value chain partners complete 
under our leadership as a general contractor.
The verification process requires each answer in the 
questionnaire to be backed up by a document or 
website link upload, which is reviewed by three different 
assessors after questionnaire submission. The aggregate 
score covers four key areas in sustainability, namely 
policies, actions and tracked KPIs across environmental 
outcomes, labour and human rights, ethics and 
sustainable procurement. The graphic below shows the 
aggregate score across 64 key value chain partners 
which is 56.4. Compared to the benchmark from the 
platform, these 64 companies outperform the benchmark 
by almost 26%. The areas of relative strengths and 
potential weaknesses can also be reviewed in order to 
engage with specific value chain partners on their own 
performance and continued performance improvement 
initiatives. 
SCORED 
SUPPLIERS
OVERALL 
SCORE
ENV
LAB
FBP
SUP
64
56.4
EcoVadis 44.9
58.8
44.9
58.8
47.7
53.8
43.0
49.5
37.0
Specific sustainability themes can also be viewed from a 
reporting perspective: 
CSR KPI
VALUE CHAIN PARTNER 
PERFORMANCE
Policy of corruption
78%
Actions on energy consumption 
& GHGs
72%
ISO 14001 certified (at least one 
operational site)
63%
Audit or assessment of suppliers 
on CSR issues
63%
Active whistleblower procedure 
in place
59%
Actions to prevent discrimination 
and/or harassments
53%
Reporting on energy consumption 
or GHGs
48%
Reporting on CO2 emissions
45%
From commitment to performance 
assessment
Top-tier partners Ecovadis & CDP disclosures
Starting in 2022, Mercury targeted to have 80% of Tier 
One Value Chain partners (based on 75% spend over 
2021) complete an Ecovadis assessment. The targeted 
Tier One group consisted of 104 subcontractors and 
suppliers and over the course of 2022, 63 Ecovadis 
questionnaires were completed. 
78% of the survey respondents have policies on corruption, 
72% are taking action on GHG, and 48% are reporting on 
GHG. 
To measure upstream partner improvements over time, 
Mercury also plans to engage with its top tier partners 
in 2023 to encourage them to voluntarily disclose their 
carbon emissions through the CDP platform.
Project Internal Audits
Internal project audits include several ESG areas such as 
labour and EHS. In parallel, an analysis of practices and 
ethical credentials of agencies we partner with take place 
during onboarding of new supply chain partners and thus 
far no major corrective actions have been registered.

30 
Sustainability Report 2022
Our 2022 giving approach
Our 2022 plan set out to ensure we were supporting local 
non-profit organisations across all the locations where 
we engage in construction activities in a way that aligns 
with our level of presence at each location and shows 
alignment with the seven UN SDGs (United Sustainable 
Development Goals) we targeted. 
9.	 WELL-BEING 
	
OF LOCAL 
	
COMMUNITIES
Our Planet, Our Duty lays the foundation, 
helping us to have meaningful impacts in 
all communities where we operate.
Acting on our fourth sustainability duty, through financial 
contributions, collaborations with non-profit organisations 
local to our sites, and employee volunteerism, Mercury 
brings positive, lasting change to communities across 
Europe.
In addition to corporate giving, Mercury also supports 
local communities through volunteer activities by local 
employees. Our volunteering policy allows Mercury 
employees up to two paid working days for volunteer 
work. For 2023 we have increased our focus and aim to 
have an established partnership with more local non-profit 
organisations, we look for more team opportunities where 
Mercury volunteers can contribute their efforts - helping in 
ways that go beyond donating money.
Ensure healthy lives and promote well-being 
for all at all ages.
Achieve gender equality and empower all 
women and girls.
Reduce inequality within and among 
countries.
Protect, restore and promote suistainable use 
of terrestrial eco-systems. Halt and reverse 
land degradation and biodiversity loss.
Ensure inclusive and equitable quality 
education. Promote lifelong learning 
opportunities for all.
End poverty in all its forms everywhere.
End hunger, achieve food security, 
improved nutrition and promote 
sustainable agriculture.

CASE STUDY: 
Life on Land – Protect, restore, and 
promote sustainable use of terrestrial 
ecosystems, and halt and reverse land 
degradation and halt biodiversity loss. 
We supported two organisations based in Denmark, 
The Danish Nature Foundation and The Danish 
Society for Nature Conservation, both of whom have 
a mission to create natural habitats and protect 
endangered species. 
Copenhagen | DK - The Danish Society 
for Nature Conservation, Danmarks 
Naturfredningsforening
The Danish Society for Nature Conservation work 
to protect the Barn Owl. Denmark’s smallest 
owl species and only the size of a blackbird, it is 
estimated that there are only 13 breeding pairs left 
in Denmark. The group works to convert agricultural 
land into suitable natural habitats for this species, 
and thanks to Mercury’s support more Barn Owls 
have already been relocating to this safe habitat. The 
owls require special nesting conditions to reproduce 
and GPS trackers which provide valuable information 
and assist conservationists when planning further 
protective measures.
Engelsholm Sønderskov | DK - The Danish 
Nature Foundation, Den Danske Naturfond
Mercury’s donation enabled The Danish Nature 
Foundation to purchase a parcel of land at 
Engelsholm Sønderskov, located northwest of 
Odense. This area will provide a home for a number 
of endangered species, including the Great Horned 
Owl, the Forest Marten, the Woodpecker, and many 
more. The foundation has selected to allow this land 
to develop freely as a natural habitat. The donation 
of 3.090 square metres will help the foundation 
continue to create more habitats for animals 
and plants, while giving the public access to 
memorable nature experiences.
31 
Our corporate giving has benefited the work of over 40 
non-profit organisations across 10 countries during the 
last year and we spent EUR 400,000 in corporate giving 
to create a lasting impact in the most needed areas. 
Our process of sourcing, vetting and engaging with non-
profit organisations aims to manage any risks related to 
misrepresentation or malpractices around spending of 
donations.
CSR Corporate giving alignment with UN SDGs
12%
10%
6%
3%
27%
24%
18%

32 
Sustainability Report 2022

33 
Sustainability Report 2022
This reporting index provides a summary of 
where content can be found in the report 
or publicly available on Mercury’s website. 
The GRI 2 (General Disclosures 2021 
updated) standard has been used as a 
basis for the report structure.
10.	MERCURY 2022 
REPORTING INDEX
The GRI Standards are the most widely used sustainability reporting standards in 
the world and the Global Reporting Initiative (GRI) supports the communication of 
organisational impact on issues such as climate change and human rights. Using 
the GRI standards helps to improve understanding of these impacts and issues.
Item
Disclosure
References and comments
GRI 2 - General Disclosure
2-1
Organisational details
Mercury Engineering Ltd.
Ref. 2. About Mercury, of this report
2-2
Entities included in the organisation’s 
sustainability reporting
Ref. Section 11 and 12 of this report
2-3
Reporting Period, frequency and contact 
point
Ref. 2. About Mercury, page 3
2-4 
Restatements of information
None
2-5
External assurance 
Clearstream Solutions verifies Mercury Engineering’s emissions data 
according to ISO 14064-3 (GHG verification standard).
Mercury’s Science Based Target was verified by the Science Based Targets 
initiative (SBTi)
2-6
Activities, value chain and other business 
relationships
Ref. Section 2 of this report. More details also available at 
https://www.mercuryeng.com/about-us/
2-7
Employees
Ref. Section 6.b. of this report
2-8
Workers who are not employees
Ref. Section 6.b. of this report
2-9
Governance structure & composition
Ref. Section 3 of this report
Partly not disclosed. Confidentiality constraints
2-10
Nomination and selection of the highest 
governance body
Not disclosed. Confidentiality constraints
2-11
Chair of the highest governance body
Mercury’s CEO is not the chairman of its Board of Directors
2-12
Role of the highest governance body in 
overseeing the management of impacts
Ref. Section 3 of this report
https://www.mercuryeng.com/about-us/values/ for more details on values
2-13
Delegation of responsibility for managing 
impacts
Ref. Section 3 of this report
2-14
Role of the highest governance body in 
sustainability reporting
Ref. Section 3 of this report
2-15
Conflicts of Interest
Ref. Section 3 of this report
2-16
Communication of critical concerns 
Ref. Section 3 of this report.
No grievances recorded in 2022.
2-17
Collective knowledge of the highest 
governance body
Ref. Section 3 of this report as it relates to staff training.
As it stands, members of the Board of Directors that are not employees of 
Mercury have not received any training specific to sustainable development

34 
Sustainability Report 2022
Item
Disclosure
References and comments
GRI 2 - General Disclosure
2-18
Evaluation of the performance of the 
highest governance body
Ref. Section 6.b of this report, paragraph “Fair Remuneration process” 
details the performance evaluation process valid for all employees including 
the Executive Management Team. However, this does not apply to the 
performance of the Board of Directors
2-19
Remuneration policies
The Executive Management Teams’ compensation consists of basic salary, 
short- and long-term bonus plans, and transport options, details of which 
are not disclosed due to confidentiality constraints.
2-20
Process to determine remuneration
Ref. Section 6.b of this report
2-21
Annual total compensation ratio
The 2022 ratio of the annual total compensation for Mercury’s highest 
paid employee to the median(avg taken) annual total compensation for all 
employees = 12:1
The 2022 ratio of the percentage increase in annual total compensation for 
highest paid employee to the median (avg taken) percentage increase in 
annual total compensation for all employees is 0:5
2-22
Statement on sustainable development 
strategy
Ref. Section 1 of this report
2-23
Policy commitments
Ref. Section 3 of this report.
Ref. Mercury Responsible Business and Sustainability Policy Statement: 
https://www.mercuryeng.com/wp-content/uploads/2021/12/2021-
Sustainability-Policy-Statement.pdf
2-24
Embedding policy commitments
Ref. Mercury Responsible Business and Sustainability Policy Statement: 
https://www.mercuryeng.com/wp-content/uploads/2021/12/2021-
Sustainability-Policy-Statement.pdf
2-25
Processes to remediate negative impacts
Ref. The Mercury Code of Business Conduct: https://www.mercuryeng.
com/wp-content/uploads/2019/06/Code-of-Conduct.pdf 
Grievances and the grievance process are regularly reviewed by a 
committee comprising of representatives from Human Resources, 
Sustainability, Compliance and Legal departments together with Senior 
Executives. The 2022 review prompted a review and subsequent changes 
to the Protected Disclosure mechanisms
2-26
Mechanism for seeking advice and raising 
concerns 
Ref The Mercury Code of Business Conduct: https://www.mercuryeng.
com/wp-content/uploads/2019/06/Code-of-Conduct.pdf, specifically 
chapter 13 “Speaking-up”
2-27
Compliance with laws and regulations
Full Compliance. No fines. 
2-28
Membership Associations
Ref. Section 11 of this Report
2-29
Approach to stakeholder engagement
Ref. Section 5 of this Report
2-30
Collective bargaining agreements
Ref. Section 6.b of this Report. All of our 6,000 strong “trade” contingent - 
which besides a majority of Contractors also includes over 1,000 Mercury 
employees and over 700 agency workers - are covered under their 
respective Sectoral agreements (i.e., about 79% of individuals working 
directly or indirectly for Mercury). Mercury’s other “non-trade” salaried 
employees (about 1,600) are all entitled and availing of private health and 
pension contributions.
GRI 3: Material Topics
3-1
Process to determining material topics
Ref. Section 5 of this Report, chapter “Materiality assessment 
renewal process”
3-2
List of material topics 
Ref. Section 5 of this Report, Materiality Matrix
3-3
Management of material topics
Ref. Section 5 of this Report, chapter “Materiality assessment 
renewal process”
GRI 201: Economic Performance
201-1
Direct economic value generated and 
distributed
Mercury is a private company that rarely discloses its financials for 
confidentiality reasons. 
- Revenue: EUR 1.7Bn - YoY Revenue Growth: 15%
- Staff costs: EUR 237.2m

35 
Sustainability Report 2022
Item
Disclosure
References and comments
GRI 201: Economic Performance
201-2
Financial implications and other risks and 
opportunities due to climate change
Ref. Section 7 of the report “Minimised environmental footprint”/ Risks & 
Opportunities.
In addition to the quarterly risk review process described in the above-
mentioned section, Mercury also maintains a Business Continuity Plan 
(BCP) more operationally focused on the immediate response to weather 
events such as flooding, extreme temperatures, or high winds.
201-3
Defined benefit plan obligations and other 
retirement plans
Not applicable
201-4
Financial assistance received from the 
government
Mercury received a grant of EUR 36,000 in October 2022 from Enterprise 
Ireland (governmental agency of the Republic of Ireland) for assistance in 
relation to specific sustainability initiatives. 
Mercury is a privately held company with no shareholding from any 
government. 
GRI 202: Market Presence
202-1
Ratios of standard entry level wage by 
gender compared to local minimum wage
Almost all of Mercury’s waged employees are based in Ireland (98.2%). 
All are paid according to the relevant Sectoral Employment Orders Ref. 
Section 6.b. “Being an employer of choice” / Diversity, inclusion and 
equality / Fair remuneration process.
The nature of our business is transitory and as such Mercury hires people 
locally for vacancies available, while most senior management due to their 
nature are permanent and see little turnover, we do promote internally first 
where possible.
202-2
Proportion of senior management hired 
from the local community
The temporary nature of construction projects is incompatible with the 
hiring and retention of permanent senior management from the local 
community at construction sites
GRI 203: Indirect Economic Impacts
203-1
Infrastructure investments and services 
supported
Mercury is commercially engaged in the construction of some infrastructure 
projects such as hospitals. While its services enable the realisation of such 
projects – some of which have significant positive impact on the community 
at local, regional or even national level – Mercury does not directly invest 
nor hold any stake in these projects.
203-2
Significant indirect economic impacts
Ref. Section 9 of this Report.
Mercury has donated EUR 400,000 to various charitable organisations as 
part of its Corporate Giving initiative.
GRI 204: Procurement Practices
204-1
Proportion of spending on local suppliers
Over 90% of our Irish projects rely on Irish or EU suppliers
GRI 205: Anti-Corruption
205-1
Operations assessed for risks related to 
corruption
Risk management processes result in frequent risk reviews on projects and 
on corporate functions. Specific attention is given to any new business 
opportunity and more specifically any country where Mercury has not 
previously performed any work. Ratings are performed at minimum on 
a quarterly basis and mitigation or avoidance actions are documented 
for every high rating observed. All details are logged as part of the risk 
management procedure and made available for internal audits. While 
potential risk may have been a factor in declining some engagements, there 
was no significant risk specifically related to corruption identified with any of 
the engagement Mercury was actively participating in 2022.
205-2
Communication and training about anti-
corruption policies and procedures
Ref. Section 3 of this Report “Governance” as well as https://www.
mercuryeng.com/about/governance. All Mercury employees and its Board 
Members have received training related to the company’s Code of Conduct 
addressing anti-corruption matters. This training is required upon joining the 
organisation and a refresher training is required every year.
205-3
205-3 Confirmed incidents of corruption 
and actions taken
No issues recorded

36 
Sustainability Report 2022
Item
Disclosure
References and comments
GRI 206: Anti-Competitive Behaviour
206-1
Legal actions for anti-competitive 
behaviours, anti-trust, and monopoly 
practices
No issue recorded
GRI 207: Tax
207-1
Approach to Tax
Information not disclosed. Confidentiality constraints
207-2
Tax governance, control, and risk 
management
Information not disclosed. Confidentiality constraints
207-3
Stakeholder engagement and 
management of concerns related to tax
Information not disclosed. Confidentiality constraints
207-4
Country-by-country reporting
Information not disclosed. Confidentiality constraints
GRI 301: Materials
301-1
Materials used by weight or volume
Not applicable
301-2
Recycled input materials used
97% of our waste is diverted from landfill
301-3
Reclaimed products and their packaging 
materials
Not applicable
GRI 302: Energy
302-1
Energy consumption within the 
organisation
Ref. Section 7 of the report “Minimised environmental footprint”/ Energy 
Consumption
302-2
Energy consumption outside of the 
organisation
Information unavailable
302-3
Energy Intensity
The energy intensity for Mercury for period 2022 (Ref. Energy Consumption 
disclosed in Section 7) is 0.00426 kWh per Euro of Revenue
GRI 302: Energy
302-4
Reduction of energy consumption
Mercury’s Energy consumption increased in 2022 compared to 2021, 
however, we saw an increase in our data quality and quantity record. There 
was also still a lingering Covid-19 impact as staff present in the office 
increased again in 2022 compared to prior years.
302-5
Reductions in energy requirements of 
products and services
Not applicable
GRI 303: Water and Effluents
303-1
Interactions with water as a shared 
resource
Mercury’s activities on construction sites require the use of some water. The 
water is generally withdrawn from the site’s own connection to the public 
water supply system where available, or water tanks otherwise. Its use 
generates grey water generally discharged through the wastewater (public 
sewage) system and/or surface water. At the moment the quantities are not 
tracked as it would – in most cases – require specific sub-metering given 
Mercury is rarely the sole water user on a site. 
303-2
Management of water discharge-related 
impacts
Mercury complies with regulations ensuring water discharges do not 
contaminate local surface or groundwater.
303-3
Water withdrawal
Ref. Disclosure 303-1
303-4
Water discharge
Ref. Disclosure 303-1
303-5
Water consumption
In 2022 Mercury’s HQ and other offices consumed an estimated 
1,084.259m3 or 1,084,259 litres of water (based on HQ water consumption 
data and extrapolated for the other offices). As per disclosure 303-1, water 
consumption quantities are not currently tracked at construction sites.

37 
Sustainability Report 2022
Item
Disclosure
References and comments
GRI 304: Biodiversity
304-1 &
304-2
Operational sites owned, leased, managed 
in, or adjacent to, protected areas and 
areas of high biodiversity value outside 
protected areas, and significant impacts 
of activities, products and services on 
biodiversity.
An environmental assessment is conducted for every construction project 
before it is allowed to commence. This is a standard procedure that 
includes concerns related to potential biodiversity impact – essentially of 
the immediate terrestrial ecosystem. No issues related to biodiversity were 
flagged in 2022.
304-3
Habitats protected or restored
Ref. Mercury’s 2022 CSR Report “Embracing local communities”, p.9 
“Life on Land” relating to the support of The Danish Society for Nature 
Conservation and The Danish Nature Foundation. https://www.mercuryeng.
com/wp-content/uploads/2022/12/131222_CSR-Sustainability_Interactive-
rev-final.pdf
304-4
IUCN Red List species and national 
conservation list species with habitats in 
areas affected by operations
Ref. Mercury’s 2022 CSR Report “Embracing local communities”, p.9 
“Life on Land” relating to the support of The Danish Society for Nature 
Conservation and The Danish Nature Foundation. https://www.mercuryeng.
com/wp-content/uploads/2022/12/131222_CSR-Sustainability_Interactive-
rev-final.pdf
GRI 305: GHG Emissions
305-1
Direct (Scope 1) GHG Emissions
Ref. Section 7 “Minimised environmental footprint”.
305-2
Energy indirect (Scope 2) GHG Emissions
Ref. Section 7 “Minimised environmental footprint”.
305-3
Other Indirect (Scope 3) GHG Emissions 
Ref. Section 7 “Minimised environmental footprint”.
305-4
GHG emissions intensity
Ref. Section 7 “Minimised environmental footprint”.
305-5
Reduction of GHG Emissions
Ref. Section 7 “Minimised environmental footprint”.
305-6
Emissions of ozone-depleting substances 
(ODS)
Mercury’s activity does not produce any ODS. It was noted however that 
the air conditioning system used in some of our premises generates a small 
amount of substitute ODS known as Fluorinated gases or F-gases. These 
are being accounted for under our GHG/CO2e footprint.
305-7
Nitrogen oxides (Nox), Sulphur oxides 
(SOx), and other significant air emissions
As it stands there is no measurement of these emissions taking place, 
with the exception of our own fleet of vehicles. The vehicles-related 
measurements did not record any such emissions.
GRI 306: Effluents and Waste
306-1
Waste generation and significant waste-
related impacts
Recycling partners are selected based on the rate of recycling (i.e. stated 
material recovery efficiency), the distance to the origin of the waste and the 
fact that waste may be used for energy/heat.
306-2
Management of significant waste related 
impacts
Ref. Section 7 of the report “Minimised environmental footprint”/ Savings 
from using Digital Solutions.
306-3
Waste generated
Ref. Section 7  13,165.32 Tonnes generated
306-4
Waste diverted from disposal
Ref. Section 7 10,663.91 Tonnes recycled
306-5
Waste directed to disposal
Ref. Section 7 208.01 Tonnes directed to disposal 
GRI 308: Supplier Environmental Assessment
308-1
New suppliers that were screened using 
environmental criteria
Ref. Section 5 of the report “Our Stakeholder engagement”/Suppliers
Ref. Section 8 of the report “Maintaining Responsible Partnerships”/
Ecovadis
308-2
Negative environmental impacts in the 
supply chain and actions taken
No flag in 2022
GRI 401: Employment
401-1
New employee hires and employee 
turnover
894 employees joined in 2022 and 775 employees left the company in 
2022.

38 
Sustainability Report 2022
Item
Disclosure
References and comments
GRI 401: Employment
401-2
Benefits provided to full-time employees 
that are not provided to temporary or part 
time employees
Ref. Section 6 of the report “Being an employer of choice”
As of 2022, all salaried employees now avail of pension contributions and 
health insurance. This also includes our part-time employees.  Agency 
worker conditions may vary according to their employer’s contract.
Mercury has elected to pay parents whose partner recently gave birth/ 
adopted full paid paternity leave.
401-3
Parental leave
Mercury’s parental leave policy outlines how an employee may be eligible 
to apply for the statutory 26 weeks unpaid parental leave available to 
employees within Ireland and the EU.  
GRI 402: Labour/Management Relations
402-1
Minimum notice periods regarding 
operational changes
Mercury adheres to the statutory redundancy notice periods, which is 
dependent on length of service 
GRI 403: Occupational Health & Safety
403-1
Occupational health and safety
Ref. Section 6.a., “Being an employer of choice”/EHS
403-2
Hazard identification, risk assessment, and 
incident investigation
Ref. Section 6.a., “Being an employer of choice”/EHS
403-3
Occupational health services
Ref. Section 6.a., “Being an employer of choice”/EHS
403-4
Worker participation, consultation and 
communication on occupational health 
and safety
All training applies to the whole team working on-site, regardless of whom 
their employer is. All workers on-site are rewarded for safe behaviour.
403-5
Worker training on occupational health 
and safety
Ref. Section 6.a., “Being an employer of choice”/EHS, also Section 6.b 
related to Safety training
403-6
Promotion of worker health
Ref. Section 6.a., “Being an employer of choice”/EHS
403-7
Prevention and mitigation of occupational 
health and safety impacts directly linked 
by business relationships
Ref. Section 6.a., “Being an employer of choice”/EHS
403-8
Workers covered by an occupational 
health and safety management system
Every single individual accessing a site controlled by Mercury is registered 
on the H&S Management system, with no exception. 
403-9
Work-related injuries
Zero fatality in 2022. 2 Recordable events “over 3 days absence”. No 
differentiation whether individuals are direct employees or not.
403-10
Work-related ill health
No fatalities recorded in 2022 regardless of employee status.
GRI 404: Training & Education
404-1
Average hours of training per year per 
employee
35hrs average per employee, 30% higher than expected for 2022
404-2
Programmes for upgrading employee skills 
and transition assistance programmes
Ref. Section 6.c. “Being an employer of choice”/Learning & Development.
404-3
Percentage of employees receiving regular 
performance career development reviews
Every employee is required to receive a review at least once a year. No 
exception.
GRI 405: Diversity & Equal Opportunity
405-1
Diversity of governance bodies and 
employees
Ref. Section 6.b. “Being an employer of choice” / Diversity, inclusion and 
equality.
405-2
Ratio of basic salary and remuneration of 
women to men
On aggregate, there is no disparity between the total remuneration of men 
and women, noting there are currently less women in senior roles.
GRI 406: Non-Discrimination
406-1
Incidents of discrimination and corrective 
actions taken
Mercury recorded no formal “Dignity at work” complaints in 2022.

39 
Sustainability Report 2022
Item
Disclosure
References and comments
GRI 407: Freedom of Association and Collective Bargaining
407-1
Operations and suppliers in which the right 
to freedom of association and collective 
bargaining may be at risk
All of our 6,000 strong “trade” contingent - which besides a majority of 
Contractors also includes over 1,000 Mercury employees and over 600 
agency workers - are covered under their respective Sectoral agreements 
(i.e. about 79% of individuals working directly or indirectly for Mercury). 
Mercury’s other “non-trade” salaried employees (about 1,600) also have 
the right to freedom of association and collective bargaining. Regarding the 
staff at Mercury’s other suppliers, our Risk Management process considers 
most of them - located in the EU - to be at very low risk. Mercury has a 
small number of suppliers in Turkey, a country identified as a higher risk 
location by our Risk Management process. 
GRI 408: Child Labour
408-1
Operations and suppliers at significant risk 
for incidents of child labour
Ref. The Mercury Code of Business Conduct: https://www.mercuryeng.
com/wp-content/uploads/2019/06/Code-of-Conduct.pdf
Also addressed in Section 8 of the report “Maintaining Responsible 
Partnerships”
GRI 409: Forced or Compulsory Labour
409-1
Operations and suppliers at significant 
risk for incidents of forced or compulsory 
labour
Ref. The Mercury Code of Business Conduct: https://www.mercuryeng.
com/wp-content/uploads/2019/06/Code-of-Conduct.pdf
Also addressed in Section 8 of the report “Maintaining Responsible 
Partnerships”
GRI 410: Security Practices
410-1
Security personnel trained in human rights 
policies or procedures
Not applicable
GRI 411: Rights of Indigenous Peoples
411-1
Incidents of violations involving rights of 
indigenous peoples
Not applicable
GRI 413: Local communities
413-1
Operations with local community 
engagement, impact assessments, and 
development programmes
Ref. The Mercury Code of Business Conduct: https://www.mercuryeng.
com/wp-content/uploads/2019/06/Code-of-Conduct.pdf
Also addressed in Section 8 of the report “Maintaining Responsible 
Partnerships”
413-2
Operations with significant actual and 
potential negative impacts on local 
communities
An environmental assessment is conducted for every construction 
project before it is allowed to commence. This is a standard procedure 
that includes concerns related to potential negative impact on local 
communities. In addition, levels of noise and dust are monitored during 
the length of the project. Any issue proactively identified or raised by the 
community is addressed immediately. No issue of any significance was 
recorded in 2022.
GRI 414: Supplier social assessment
414-1
New suppliers that were screened using 
social criteria
Ref. Section 5 of the report “Our Stakeholder engagement”/Suppliers
414-2
Negative social impacts in the supply 
chain and actions taken
Ref. Section 5 of the report “Our Stakeholder engagement”/Suppliers
Ref. Section 8 of the report “Maintaining Responsible
GRI 415: Public Policy
415-1
Political contributions
None
GRI 416: Customer Health and Safety
416-1
Assessment of health and safety impacts 
of product and service categories
Ref. Section 6.a. of this Report “Being an employer of choice”/EHS
416-2
Incidents of non-compliance concerning 
health and safety of products and services
Ref. Section 6.a. of this Report “Being an employer of choice”/EHS

40 
Sustainability Report 2022
Item
Disclosure
References and comments
GRI 417: Marketing and Labelling
417-1
Requirements for product and service 
information and labelling
Not applicable
417-2
Incidents of non-compliance concerning 
product and service information and 
labelling
Not applicable
GRI 417: Marketing and Labelling
417-3
Incidents of non-compliance concerning 
marketing communications
Not applicable
GRI 418: Customer Privacy
418-1
Substantiated complaints concerning 
breaches of customer privacy and losses 
of customer data
No breaches regarding customer privacy

41 
Sustainability Report 2022
11.	OUR ISG PARTNERS

42 
Sustainability Report 2022
12.	OUR CSR PARTNERS

43 
Sustainability Report 2022
Mercury’s 2022 report consolidates information from all entities under its control. These are listed below.
Country
Name of the Company
Austria
Mercury Engineering Austria GmbH
Belgium
Mercury Engineering Belgium SRL
Denmark
Mercury Engineering ApS
France
Mercury Engineering France SAS
Germany
Mercury Engineering GmbH
Israel
Mercury Engineering Israel Ltd (English), .MEI Mercury Engineering Israel Ltd  (Hebrew)
Italy
Mercury Engineering Italy S.R.L
Netherlands
Mercury Engineering BV
Poland
Mercury Engineering Polska Sp. z o.o.
Portugal
MERCURYENG Unipessoal, Lda
Republic or Ireland
Mercury Engineering Unlimited Company
Spain
Mercury Engineering and Building Services Spain SLU
Sweden
Mercury Engineering Sweden AB
Switzerland
Mercury Engineering Switzerland GmbH
Turkey
MERCURY ENGINEERING MÜHENDISLIK ANONIM ŞİRKETİ
United Kingdom
Mercury Engineering and Building Services Limited	
ENTITIES COVERED
	
BY THIS REPORT

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