A city Department of Transportation worker was shot with a BB gun in an apparently random attack while on the job in Brooklyn, cops said Friday.

The 41-year-old man was hit with a small pellet in the back while bending over working around 8:10 a.m. near East 19th Street and Avenue L in Midwood, according to cops.

The man was taken to the hospital and treated for minor injuries.

Law-enforcement sources said the shooting appeared to be random.