An on-duty MTA worker was standing on the platform at a Harlem subway station on Friday afternoon when she was punched in the face, and the NYPD is searching for the assailant.

The MTA worker, 66, was on duty and on the platform at Harlem’s W. 148th St.-Lenox Ave. station when a stranger punched her in the face Friday afternoon, police said.

An MTA employee was punched in a random, unprovoked attack in a subway station in Harlem on Friday afternoon, police say. The 66-year-old employee was on the job at the Harlem -148 Street subway station around 1 p.

A 66-year-old MTA worker was randomly punched in the face while she was standing on a Manhattan subway platform Friday afternoon, cops said. The attacker pummeled the on-duty worker without warning inside the West 148th Street and Lenox Avenue Subway Station just after 1 p.