City officials are investigating sex-abuse allegations against an ex-con who rakes in $105,000 as a Parks and Recreation Department supervisor, a spokeswoman for Mayor de Blasio said Sunday.

The probe of Michael Palamar follows a Page 1 Post report about a suit that says he molested and sexually harassed a 19-year-old woman while she worked as a seasonal worker between 2015 and 2017.

The Manhattan federal court filing also claims co-workers call Palamar a “pedophile” for allegedly pressuring young female trainees into sex acts.

“The allegations against this employee are being investigated, and if they are true, the Parks Department will move to fire him,” City Hall spokeswoman Natalie Grybauskas said.

Palamar, 53, served two stints in prison — including for fatally bashing an elderly neighbor with a baseball bat — before being hired by the Parks Department in 2006.

He also pleaded guilty in 2009 to misdemeanor sexual abuse for groping a woman who was performing community service for the Parks Department under his supervision.

Palamar didn’t return messages seeking comment.