An FDNY worker was caught masturbating inside a Manhattan subway station — one of three city employees busted in the last day, police said Saturday.

Cops spotted 74-year-old Albert Simmonds masturbating inside a public bathroom in the 42nd Street-Bryant Park subway station at about 4 p.m. Friday, officials said.

When police searched him, they found drugs and arrested him on the spot.

Simmonds, who works for the fire department as a human resources administrator, was charged with possession of a controlled substance and public lewdness.

About two hours later, Department of Sanitation worker Rafael Casimiro, 37, was busted in Staten Island for driving the wrong way down a one-way street, authorities said.

He was also hit with drug charges after cops discovered he had marijuana.

Just a few hours later at about 12:45 a.m., an ACS worker was arrested after a domestic dispute, police said.

Queens man Tasheem Strother, 46, allegedly got into an argument with his wife that turned violent when he began punching her in the face and shoulder in front of their child, authorities said.

Strother was charged with assault, disorderly conduct, and endangering the welfare of a child.

All three men were expected to appear in court for their arraignments Saturday.