Immigration Minister Kris Faafoi is considering a revamp of New Zealand's largest residence programme.
He says a review of the skilled migrant category is a priority.
Thousands of immigrants and their families are waiting for news on their skilled migrants applications, and others have been waiting to be invited to apply since last March.
No decision has been made on re-starting the selection of expressions of interest (EOI) for skilled workers, Faafoi said, but that would be looked at again by the end of next month.
Australia recently launched an inquiry into its skilled migration programme, while Canada has invited 27,000 temporary workers to apply for residence.
"A review of the skilled migrant category is one of my priorities for this term," Faafoi said in a written statement. "Decisions around the scope and timing of any such review are currently under consideration. No decisions on settings or planning range have been made at this stage.
"EOI selections in Skilled Migrant Category (SMC) and Parent categories are currently suspended. No decisions about when EOI selections will resume have been made. In October, the government decided to further defer EOI selections for the SMC. This will be reviewed again by the end of March 2021."
Immigration lawyer Elly Fleming said New Zealand's review could look at adjusting settings, such as minimum renumeration limits for lower-level skilled jobs.
Or it could be something more wide-ranging.
"It's really difficult to predict what the government's priorities are," she said. "I think it all depends on what their goal is. If their goal is to make it harder for migrants to get residence, if that's the goal then there are several ways they can go about doing this.
"Or if the goal is to actually fill gaps in the labour market, they can say 'yes, we know there are these shortages, we can't get enough registered nurses, we can't get enough doctors or engineers, let's make it easier for them to get residence'."
Australia had been more strategic in assessing its skills needs and getting workers it needed into the country, she said.
The number of residence applications fell from 3693 in June last year to 147 last month after EOIs were suspended last autumn. Half of all skilled migrant residence applications take about 20 months to two years to decide.
Immigration lawyer Mike McMellon said those factors and the uncertainty about what might now happen with the skilled migrant category were driving some people away.
"I just can't understand why they haven't put more resources into this. And it may well be that they are putting this skilled migrant category residency into a holding pattern until such time as they've conducted a review as to how they're going to proceed in the future.
"In the meantime, we're having people contact us saying 'what's happening with skilled migrant residency? I don't have a pathway to residency here in New Zealand anymore, we're considering applying for residency in Canada.'
"That's what's on the line for New Zealand - people will vote with their feet. Skilled migrants who we would otherwise want in this country will leave."
Not selecting expressions of interest for a year was problematic, he added.
"Those expressions of interest stay in the pool for a maximum of six months and if they're not selected from the pool within that period of time then they fall away. As far as we know at this point, Immigration New Zealand isn't refunding that fee - so it's effectively a donation to Immigration New Zealand."
There was no border or pandemic-related reason that stood up to scrutiny for not inviting those who qualify to apply, he said, as they could be selecting immigrants who were already in the country.
"The only justification I can see is either a) they're under-resourced dealing with a backlog, or b) they don't want those people to necessarily progress to residency in New Zealand, because there is a perceived influx of New Zealanders into the country who may take the jobs that those migrants would otherwise have.
"Now, the danger for the New Zealand economy is that even if that does happen, when it becomes attractive to travel overseas again, are those people that came here are they just going to disappear again? And we've lost both that New Zealander and the migrant who had a pathway to residency."