Health Workers Union secretary Diana Asmar said workers returned to work Tuesday after issuing an ultimatum for Dorevitch to produce a fair pay offer or workers would strike again.

Ms Asmar said workers had waited since 2007 for new pay deal. 

“Primary Health, the company that owns Dorevitch, issued a statement that their profits have gone up on last year, now at $92million with reported revenue at $1.7billion,” she said.

“It is immoral that they should offer their workers a zero percent pay rise after making them wait 10 years.”

A Dorevitch Pathology spokesperson said they had experienced minimal disruption to services.

“ A number of contingencies have been implemented to limit the impact to patients and GPs,” they said.

“Our laboratories are continuing to process tests and work with GPs to deliver results as per usual. There has been no impact to the services we provide public and private hospitals.”