MADISON, Wis. -

While the top earners in Madison city government include high-level managers and attorneys, records show some bus drivers, mechanics and police officers earned thousands in overtime pay.

The Wisconsin State Journal reported the city spent $158.8 million in base pay for workers last year. Extra pay, including overtime, sick time and vacation pay, rose for the third straight year to $15.1 million.

A total of 36 workers earned more than $15,000 in overtime alone. That includes assistant city clerk Elena Berg -- who nearly doubled her base salary with $43,460 in overtime. Two other assistant clerks earned over $20,000 in overtime.

City Clerk Maribeth Witzel-Behl says overtime payouts are due to six elections and a heavy workload.

The top 25 overtime earners included 13 Metro bus drivers and mechanics.