# Securing Construction Workers' Data Security and Privacy with Blockchain Technology
## 1 Introduction  
The construction industry is known for its complex dynamics involving numerous stakeholders and a diverse workforce. With projects ranging from small-scale renovations to large infrastructure development, it becomes crucial to address the challenges associated with managing information in such an environment [1, 2]. As construction projects involve multiple entities, including workers, clients, contractors, engineers, managers, regulatory bodies, and certification bodies, ensuring the confidentiality and security of data becomes a critical concern. One significant aspect that requires attention is the privacy and safety of construction workers' personal information. The privacy and safety of construction workers' information pose unique challenges due to the sensitive nature of the data involved. Personal details, such as names, ages, addresses, identification numbers, qualifications, certifications, and work history, are essential for various administrative and operational purposes, including employment, compliance, and safety [3, 4]. However, the exposure of this information to unauthorized individuals can lead to identity theft, misuse, fraud, exploitation, and potential harm to theworkers [5; 6; 7]. Safeguarding the privacy and security of workers' personal information is not only a legal and ethical obligation but also essential for maintaining trust and protecting their rights [8]. This aligns with the work of [PERSON] et al. [9], which highlights that privacy protection is of utmost importance as it forms a key element in societal norms and law; nevertheless, it is often traded away in favor of \"good causes,\" like security, safety, efficiency, or productivity. Furthermore, the construction industry has long grappled with the persistent challenge of a shortage of skilled labor, and the workforce is rapidly aging [10; 11; 12; 13]. These factors further emphasize the importance of effectively managing construction workers' personal information. With a limited pool of skilled workers, prioritizing the protection of their personal data becomes crucial to attract and retain talent. Construction workers invest their time and expertise in projects and deserve the assurance that their sensitive information is handled with the utmost care [14]. Additionally, ensuring the efficient handling of safety-related data concerning construction workers is crucial for establishing a healthy work environment. This significance arises from the fact that the construction industry, recognized for its job-related safety risks, involves constantly changing and physically strenuous tasks of an unpredictable nature. These tasks compel workers to execute actions in precarious and uncomfortable stances over extended periods, leading to instances of non-lethal injuries [15; 16; 17]. These injuries can have long-lasting consequences, leading to permanent disabilities for construction workers. One specific type of injury is musculoskeletal disorders (WMSDs), which are often caused by external factors, such as repetitive movements, overexertion, and awkward postures in occupational settings. WMSDs can affect different areas of the body, such as the lower back, upper limbs, and lower limbs, and they are associated with impairments in physical tissues, like the joints, bones, muscles, and tendons [18; 16]. By effectively managing data on high-risk construction activities in a secure and reliable system, construction stakeholders can make informed decisions that prioritize the safety and well-being of their workforce. Data manipulation presents a significant risk within the construction industry due to the intricate network of stakeholders involved in data exchange. Unsanctioned alterations or tampering with information regarding workers' credentials, certifications, employment history, and safety records can lead to grave consequences. These include jeopardizing the credibility of projects, compromising the safety of workers, and undermining trust among stakeholders [19].