Police say there was more on the menu than coffee and doughnuts during the late shift at a Dunkin' Donuts in northern New Jersey.
Melissa Redmond, 29, of Mine Hill, N.J., faces prostitution charges after police say she took breaks to provide sex in exchange for money.
Rockaway Township police launched an investigation known as "extra sugar" after getting an anonymous tip about the worker's activities, Detective Sgt. Kyle Schwarzmann, who led the investigation, told the Daily Record of Parsippany, N.J.
"She was a night time employee (working 9 p.m. to 5 a.m.), supposedly a very good one," Schwarzmann said.
Redmond would go out to cars and would spend 10 to 15 minutes in the vehicles, said Schwarzmann, who conducted surveillance at the scene.
Schwarzmann says Redmond was arrested after soliciting sex from an undercover officer who first inquired about her services at the drive-thru window.
No one at the Dunkin' Donuts wanted to comment.
Redmond was arrested, served a complaint and released.