In October, the Baltimore Department of Finance published a report that reviewed the 25 highest overtime earners and found that 40 percent of them were assigned police duties other than patrol. For example, Officer Clarence Grear works the front door at City Hall and a booth at a police parking garage, then volunteers for extra shifts. Grear earned about $212,800 last fiscal year. That made him the 10th highest-paid city employee. He declined to comment.