The state branch of the Australian Nursing Federation wants the WA government to bring back some restrictions if and when hospitalisations reach 300.

WA secretary Mark Olson told Liam Bartlett on Friday masks and social distancing should be back on the table.

"I don't want to see elective surgery banned again and I certainly don't want to see ambulance ramping approaching...8000 hours, but that's what's going to happen unless the government brings back restrictions once we see hospitalisations going above 300; that's the critical figure for us," he said on 6PR Mornings.