Question: Can I keep on working while waiting to see if the application for my next WHM visa is accepted or not?

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: Temporary visa measures supporting the agriculture sector
Employers
Due to the COVID-19 border restrictions, seasonal workers and pacific labour scheme participants are unable to travel to Australia at present. What other options are available to access workers to address labour needs?
section_content: In response to the current COVID-19 pandemic, the Australian Government has
announced temporary measures to assist temporary visa holders currently in
Australia, including Seasonal Worker Programme and Pacific Labour Scheme
participants, who are unable to currently return to their home country, to
extend their stay in Australia, and enable flexibility in changing approved
employers where required.
Under these temporary measures, current approved employers may wish to employ
Seasonal Worker Programme or Pacific Labour Scheme participants who have
finished employment with their current approved employer, but who are unable
to return to their home country.
Approved employers, like any employer, may also wish to employ Temporary
Activity (subclass 408) Australian Government Endorsed Event (AGEE) stream
visa holders

This visa will have a nil visa application charge (VAC) for the COVID-19 pandemic event. 
Employer sponsorship arrangements similar to the Seasonal Worker Programme will also apply to the subclass 408 visa.

These temporary measures are not intended to prevent the recruitment of
Australians to undertake this work. Before seeking access to seasonal workers
under the Seasonal Worker Programme, approved employers must first try to
recruit Australians.
Where Australian workers are unavailable, employers can also seek seasonal
labour through the Working Holiday Maker program. Working Holiday Makers who
are working in critical sectors (i.e. agriculture, food processing, health
care, aged care, disability care or child care) will be exempt from the six
month work limitation with one employer and eligible for a Temporary Activity
(subclass 408) visa in the Australian Government Endorsed Event (AGEE) stream.
Employers are still required to abide by all relevant Australian workplace
laws. Overseas workers have the same rights under Australian workplace law as
all other employees.
These temporary measures will be in place for a timeframe that allows relevant
critical industries to bridge the gap between their immediate needs and the
time to recruit, train and on-board Australians. The Department of Home
Affairs is working with the Department of Education, Skills and Employment to
ensure Australians are prioritised for future job opportunities.

Reviewer feedback on this answer:
This does not answer the question. It does not provide any information on whether or not workers can keep on working while waiting for the approval for their WHM visa. Instead, this answer provides information for Seasonal Worker Programme and Pacific Labour Scheme participants, Temporary Activity AGEE stream visa holders and also recommendation for employers to seek seasonal labor through Working Holiday Maker program.
This answers the questions to some certain extent, but the answer can still be improved.
This answer explain how employers can help their employees as much as possible

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