The member of staff, who has not been named, was dismissed ‘without notice’ for ‘gross misconduct’ after a misconduct hearing held by South Yorkshire Police.
Bosses ordered the hearing after an investigation into allegations of three sex attacks was carried out by another police force.
The man was not charged, but after a misconduct hearing in South Yorkshire the panel which heard his case ruled that it was ‘more likely than not that the incidents reported did take place’.
The member of staff appealed the decision and a separate panel was convened, which upheld the original decision.
In brief details released by South Yorkshire Police in a list of misconduct hearing findings, the force said: “Allegations were made by three different women over a period of 18 years that a member of police staff sexually assaulted them.
“An independent panel decided that on the evidence presented at the hearing that it is more likely than not that the incidents reported did take place.
“In view of this, the panel decided the conduct amounted to gross misconduct and the only appropriate sanction was dismissal without notice.”
It added: “An independent panel decided the conduct amounted to gross misconduct and the only appropriate sanction was dismissal without notice.
“The member of staff appealed the decision and a separate independent panel was convened, which upheld the original sanction of dismissal without notice.”
In a statement, South Yorkshire Police said: “In August 2017, South Yorkshire Police was made aware of allegations against a member of police staff relating to sexual offences.
“The offences were alleged to have taken place outside of South Yorkshire Police's force area and were not connected to his role within the force.“As soon as South Yorkshire Police was notified, the member of police staff was suspended and a criminal investigation was launched by the relevant police force. The investigation did not result in any criminal charges.“At the conclusion of the criminal investigation, South Yorkshire Police was able to conduct an internal investigation relating to breaches of the police staff standards of professional behaviour.
“This resulted in a misconduct hearing where a panel decided the conduct of the staff member amounted to gross misconduct and they were dismissed without notice.“Following an appeal, a separate independent panel convened and upheld the original decision of dismissal without notice.”