Staff at Pinderfields Hospital have walked out on strike in a dispute over new shift patterns.
Mid Yorkshire Hospital Trust introduced the new shifts for staff in the pathology department last Monday.
The changes mean they no longer work on set days and provide on-call cover.
But instead staff work 10 hour shifts which union representatives say are putting patients’ safety at risk.
Around 30 members of staff were picketing outside the hospital yesterday.
Terry Cunliffe, Unite’s regional officer, said: “We are disputing the shift arrangements which are unsafe for both patients and staff. Staff are contracted to work 37 and a half hours but the shift patterns mean some of working in excess of that.
“Our members were told by the trust that if they did not agree to the changes their contacts would be terminated.
“The shift arrangements are not sustainable because there is not enough staff to support the structure and members are working extra.”
Union representatives met with senior managers at Mid Yorkshire Hospital Trust on Monday.
Mid Yorkshire Hospital Trust has been contacted for comment.