Who is a critical worker and who is not? For business it could literally be a multi million dollar question.
From today they can decide for themselves if they fit the bill and register for the government's Covid test to work scheme.
If they qualify, workers will be allowed to skip Covid 19 isolation rules, as long as they have no symptoms, and return daily negative rapid antigen tests - supplied by the government.
The aim is to keep essential services such as food production and delivery, power and water supplies ticking over when the worst of omicron hits.
And there also a category for solo workers - the "bubble of one". Ko taku manuhiri inaianei ko Chris Hipkins the Covid Response Minister.
