Supervisor Sean Elsbernd wants to abolish the current system, where operators receive up to a $3,000 bonus if they work about 2,100 hours a year.
Elsbernd believes the bonuses should be awarded on merit and says the move would help lower Muni's projected $70 million budget shortfall.
Union leaders say the bonuses are intended to help defray the costs of dependent health care coverage, claiming operators benefits are not as generous as most city workers.
