Older and vulnerable people will be told to limit their time outdoors again, while indoor family gatherings will be reduced to just six.
They're among the measures NPHET's recommending to government to combat a recent upsurge in Covid-19 cases.
Government ministers will meet later to consider the new advice.
The full Cabinet meeting was not scheduled and raises the possibility that further restrictions are on the way.
According to the Irish Independent, NPHET's recommended that older people should once again restrict their movements and avoid large gatherings.
It's suggesting that the numbers permitted in a home are reduced to six to clamp down on house parties, while outdoor home gatherings should be cut to 15.
It's also advising that people who can work from home should do so for the coming weeks.
It comes as 56 new cases of Covid-19 were confirmed yesterday, with 322 cases identified since Saturday.
18 people are currently being treated in hospitals for the virus, with eight confirmed cases in ICUs.
