Staff shortages led the trust which runs Pinderfields Hospital to double its spend temporary workers to £13m in just six months.
A sky-rocketing bill for temps including locum doctors and agency nurses at Mid Yorkshire Hospitals Trust has reached around £2m a month.
The trust’s temporary staffing spend was £13,006,036 between April and September this year – compared to £6,576,348 for the same period last year.
A report to this week’s meeting of the trust board said: “Temporary staffing costs have nearly doubled compared to the same period last year, with temporary staffing costs equating to 9.12 per cent of total workforce costs.
“The highest costs are within accident and emergency departments and are for medical and dental staff.”
Adrian O’Malley, from public sector union Unison, said hiring temporary workers was more costly than having permanent members of staff.
He said: “This is outrageous and should be investigated. No matter how good agency staff are they don’t know the trust and it heaps more pressure on permanent staff.”
Last month separate figures showed the number of nursing and midwifery staff at Mid Yorkshire fell by 200 between March 31, 2012, and this August.
Trust bosses say 200 nurses have been taken during a recruitment drive.
Graham Briggs, Mid Yorkshire’s HR director, insisted spending on temporary staff was kept to a minimum.
He said: “It reflects difficulties currently experienced by hospitals across the country in recruiting permanently to specialist medical and nursing posts, particularly in emergency departments, care of the elderly and theatre nursing.
“It is absolutely vital that we have people at the trust to provide this type of care.”
“We are now recruiting consultants into these specialist posts to address the need for locum cover. “
“2“This is in addition to our campaign to recruit more nursing staff through which we’ve welcomed 200 new recruits since the drive began in May.”