More than 130 porters cleaners and catering staff will walk out today.
Workers at Royal Liverpool University Hospital and Broadgreen Hospital will start day two of strike action today [Monday].
The NHS staff were employed by an arms length provider – which means they missed out on a lump sum payment given to other health worker colleagues.
The strike, which could go on for another eight days, comes after their first day of action Friday (7 June).
Kerry Nash, GMB senior organiser, said:
“NHS workers put themselves on the frontline during covid and yet they’re missing out on this payment.
“They do the same work as many who have received the payment, the only difference is a name on their uniform or payslip.
“Their work is vital to the safe running of our hospitals. The least they deserve is fair treatment.”