A NSW police officer charged over sex abuse offences allegedly committed in the workplace is one of three officers due to face court.

He is expected at Bankstown Local Court on June 16 after an investigation by the Professional Standards Command.

The alleged offences occurred between 2019 and 2020 in the workplace. The 59-year-old faces five counts of sexual touching and three counts of common assault.

The probe into the officer’s conduct began in January before he was given court notice on Thursday.

Police say the senior constable’s employment status is under review.

Also under review is a constable who is due to face court in Liverpool on May 25 after allegedly sending indecent material to a child.

An investigation was launched after the Professional Standards Command received information about the officer’s alleged online activities.

A 46-year-old male senior constable will also face court at Parramatta on June 15, following the alleged assault of two men in custody at a northwest Sydney police station.

The officer was charged with two counts of common assault, assault occasioning actual bodily harm and intentionally choke person with recklessness.

He has been suspended with pay while his employment status is reviewed.