One of the top overtime earners in disgraced ex-NYPD Chief Jefferey Maddrey’s office is talking to federal investigators as they probe sex-for-overtime allegations uncovered by The Post, law enforcement sources said.

One of the top overtime earners in disgraced ex-NYPD Chief Jefferey Maddrey’s office is talking to federal investigators as they probe sex-for-overtime allegations uncovered by The Post, law enforcement sources said.