A New Jersey police chief accused of offering one of his cops a promotion if the officer let him have sex with his wife or underage daughter should be demoted, a hearing officer ruled.

Vineland Police Chief Rudolph Beu was found guilty of failure to perform duties, insubordination, conduct unbecoming a public employee and neglect of duty during last week’s administrative disciplinary hearing, The Press of Atlantic City reported.

The city wanted to suspend Beu for 180 days without pay — but retired Judge Raymond A. Batten instead recommended only the demotion.

“Suspension now for any period of time would achieve neither meaningful nor curative purposes,” Batten wrote in his April 23 ruling.

Beu had already been suspended — with pay — from his $154,734-a-year job since Feb. 26, 2020, the report said.

He was facing a slew of allegations, including that he told a cop on the force he would promote him if the officer let Beu sleep with his wife or pre-teen daughter in 2017.

Beu was also accused of nepotism by inappropriately promoting his daughter, who is on the force, and not recusing himself in the discipline of his son-in-law, who is also a Vineland officer.

The chief allegedly ignored 19 requests from city officials and lawyers to act on Internal Affairs file requests, according to the article.

“An auspicious record,” Batten reportedly wrote. “Demotion of Chief Beu to Deputy Chief is both well-measured and warranted.”

Beu filed a lawsuit against Vineland last year, alleging defamation, civil conspiracy and rights violations, the newspaper said.