Police need your help finding a man they say punched an MTA employee in Queens.

It happened at the Ditmars Boulevard station just after 1 p.m. August 9.

Investigators say the man seen here was using the handrails on an "N" train to do pull-ups.

When the MTA employee told him that was inappropriate, they got into an argument and the man allegedly punched the worker in the face and ran off.