Nurses at Rampton Special Hospital have withdrawn goodwill and are to ballot on industrial action over new shift patterns which managers say would improve patient care.Around 700 members of the Prison Officers'Association are protesting at the change from working three 12.5-hour shifts a week to five shifts of 7.5 hours. Association branch chair Steve Oxby said the change hit couples who worked at Rampton particularly hard, and childcare arrangements had been disrupted. He claimed wards were running 'on minimum numbers', with some patient activities cancelled and 'managers going on the wards to cover the shortfalls'. A Rampton Hospital Authority spokesperson denied there was any impact on patient care or activities.