(AP) — Many state workers in Kansas are continuing to work long hours of overtime, with agency heads blaming most of the increase on staff shortages and turnover.

Overtime pay increased from $10.2 million in fiscal 2010 to $12.7 million in fiscal 2012.

The Kansas Department of Administration reports overtime costs were at slightly more than $13?million through May 25 of this fiscal year, which ends June 30. The Wichita Eagle reports state agencies have paid a total of $46.5 million in overtime from 2010 through 2013.

Records indicate the Kansas Department of Transportation, the Kansas Highway Patrol, and the state’s mental health hospitals and corrections facilities are paying the most overtime.

Much of the KDOT overtime is for inspections of construction projects, while the hospitals face severe staff shortages.