Question: Can I stay in Australia if I'm working in nursing?

Answer passage (source: Australia):
page_title: Staying in Australia
section_headers: I have a temporary visa
Visa conditions
section_content: No work condition
Visitor visa and ETA holders are not permitted to work in Australia.
Visa stay period
The stay period on an existing visa cannot be extended. Your visa will cease
if you are still in Australia at the end of your permitted stay period. If you
cannot depart Australia within the permitted stay period on your visa, you
should apply for a further visa before the date on which your visa ceases.
If you departed and returned to Australia on a round-trip cruise, this may not
be considered as a departure from Australia for the purposes of your permitted
stay period. Please check the information provided to you by your cruise ship
company.
No further stay condition (includes 8503, 8534 and 8535)
If you hold a visa with condition 8503, 8534 or 8535 and cannot depart
Australia as planned, you cannot apply for most other visas in Australia
unless the condition is waived. You can request to waive this
condition if
your visa will expire in less than four weeks. If your request is approved,
you should make a new visa application before your current visa expires.
Condition 8531 (must not remain in Australia beyond the period of stay
permitted by the visa)
If you hold a visa with condition 8531 and cannot depart Australia as planned,
you should apply for a further visa before the date on which your visa ceases.
If you are also subject to condition 8503, you will need to request a waiver
of this condition first.
We understand some people cannot leave Australia as planned due to travel
restrictions, and we will take this into account for any future visa or
sponsorship applications.
Condition 8558 (must not stay in Australia for more than 12 months in any
18 month period)
If you hold a visa with condition 8558 and cannot depart Australia as planned,
your visa will cease if you stay in Australia for 12 consecutive months at
a time.
If you have been in Australia for 12 cumulative months in an 18 month
period, your visa will still remain valid until the visa expiry date.
You should apply for a further visa if your visa will expire before you can
depart Australia. If you are also subject to condition 8503, you will need to
request a waiver of this condition first.
Visa processing arrangements
If you need to apply for a new visa to stay in Australia, you can still
explore your visa options and make a visa application at
ImmiAccount. We encourage applicants
to apply online wherever possible, as these applications will be processed
faster.
Some services relating to the visa application process may be impacted by
COVID-19 and a range of services we rely on (such as medical checks and
biometric collection) are increasingly unavailable. Applicants will be given
additional time to complete checks and provide the requested information.
We will take the service disruptions into account when considering your visa
application.
You do not need to contact us to ask for more time to complete these checks.

Reviewer feedback on this answer:
Answer tells requester that they must apply for a new visa or extension depending on the type of visa they have which is unfortunately mostly referenced via numbers and not what they're for here. Hopefully the requester knows what number their visa corresponds to and can use one of the links provided to help themselves.
This offers extensive information about how to stay on a visa of differing kinds, without directly discussing nurses.

Reviewer ratings:
Acceptable
Acceptable

Answer passage (source: Australia):
page_title: Industry and employers
section_headers: Nursing
section_content: Student visa holders already enrolled in nursing can undertake work to help
and support the health effort against COVID-19 as directed by health
officials. We will not take any enforcement action regarding student nurses
working in these circumstances.​

Reviewer feedback on this answer:
Answer references nursing student visa holders but it is not known if that is what the requester is referencing or if they are referring to them being a worker and not a student. If they are a student nursing visa holder then they should be fine but this answer is rather insufficient otherwise.
This gives the direct answer that nurses helping with the crisis will not have enforcement action used against them for being in the country on a visa.

Reviewer ratings:
Could be Improved
Excellent

Answer passage (source: Australia):
page_title: Staying in Australia
section_headers: I have a Working Holiday Maker visa
I work in a non-critical sector for COVID-19
section_content: Working Holiday Maker visas cannot be extended. However, if you have completed
three or six months of work in Australia, you may be able to apply for a
second or third Working Holiday Maker visa.
See specified work conditions for more information.
If you have not completed the three or six months of specified work required
to apply for a second, or third Working Holiday visa because of COVID-19 —
and you are not working in a critical sector, you should apply for another
visa to remain lawful until you’re able to return to your home country.
To be granted a new visa, you must meet the requirements for that visa,
including any age limits, English language, health and character requirements.
Visa condition 8547 — six month work limitation with one employer
Working Holiday Makers can do any kind of work during their stay in Australia,
but this is generally limited to six months’ work with any one employer,
unless the Department has given permission to work with the same employer for
longer than six months.
In some situations Working Holiday Makers have permission from the Department
to work for the same employer for longer than six months, where the work is:

in different locations and work in any one location does not exceed six months
in plant and animal cultivation anywhere in Australia
in certain industries in northern Australia only
assisting bushfire recovery efforts.

In any other circumstance, you need to request
permission
to work with the same employer for longer than six months.

Reviewer feedback on this answer:
Answer does not have anything to do with a nursing visa but rather concerns itself with "Working Holiday Makers" which is probably not the category the requester falls under.
This offers information about certain visa holding workers and how they may stay or extend their visas, but doesn't discuss nursing in particular.

Reviewer ratings:
Could be Improved
Could be Improved