More than 50 workers rallied together outside general admission in a strike led by United Voice secretary Carolyn Smith.
Local workers told the Courier patient care had been compromised because staff were being forced to work extra hours with smaller teams.
A Rockingham personal care assistant, who does not want her name published, said patients were suffering because no compensation had been made for the reduction of staff.
She said inadequate overtime rates and outsourcing kitchen contracts had taken its toll on the nurses and support staff.
‘We have had to compensate for these reductions by doing three different jobs at once,’ she said.
‘As well as our normal duties, we have to pick up cleaning jobs plus preparing continental breakfasts for patients and we are all exhausted.
‘We are being forced to work extra hours with no extra benefits ” enough is enough.
‘We will continue to fight until we receive additional help.’
Opposition spokesman for Health and Science Roger Cook said the Barnett Government had failed to prioritise those working in the public sector, in particular, those working in Rockingham and Kwinana.
Ms Smith confirmed that no patients were without care during the strike.