The City Council’s ethics watchdog recommended Tuesday that Bronx Councilman Andy King be suspended and fined after determining he abused his office, harassed and retaliated against staffers and engaged in self-dealing.

The unanimous determination by the Standards and Ethics committee came after nearly three hours of deliberation behind closed doors.

“The witnesses were credible and damning,” said Councilman Steven Matteo (R-Staten Island), who chairs the disciplinary panel. “They support each others testimony and there are documents that also supported many of the charges.”

He added: “The committee was unanimous in its determination.”

The panel upheld all four of the charges leveled against King in recent months, finding that King retaliated against staffers who testified about his activities, engaged in disorderly conduct, self-dealt and violated the Council’s conflict of interest policies and harassed his staff.

Committee members also recommended that the Democrat lose all of his committee assignments and his office be put under the control of an independent monitor, which would effectively strip the councilman of his key powers for his remaining two years in office.

King was first elected to the Council in 2012 and cannot seek a third term because of term limits.

Details about the punishment recommendations – including the size of the recommended fine and suspension length – will be transmitted to the whole City Council under seal late Tuesday and will be made public Wednesday, officials said.

The punishment recommendations must be approved by two-thirds of the City Council before they can take effect. A vote could take place as early as next week.

“The allegations and evidence against Council Member King are serious and deeply troubling,” said Council Speaker Corey Johnson in a statement. “The Council will consider the committee’s recommendations carefully before voting on this important matter.”

The Bronx politician fell into the crosshairs of the Council’s ethics panel for the second time in recent years after receiving reports the councilman fired a staffer he harassed and improperly tried to block the person from receiving state unemployment benefits, Matteo revealed Tuesday.

“During interviews, allegation after allegation and problem after problem surfaced in the functioning of Councilmember King’s office,” Matteo said as he handed down the ethics committee’s recommendation.

The Staten Island chairman focused much of the ire of his short remarks about King on The Bronx’s representative’s attempts to obstruct the previous and current probes.

“Councilmember King – in an effort to obstruct the first investigation in 2017 – held a staff meeting in his home where he identified the 2017 complainant by name and disparaged the complainant to his entire staff,” Matteo said. “This is behavior that cannot be tolerated.”

That investigation ended in February 2018 when the Ethics Committee required that King attend sensitivity training after determining he harassed staffers.

Matteo’s panel publicly disclosed it was pursuing a second probe into King in April over allegations he harassed staffers and let an aide with “supervisory responsibilities repeatedly threaten a subordinate with violence” — and even commit “an act of violence” against the underling.

Additionally, the disciplinary panel said it was probing allegations King’s wife — Neva Shillingford-King, an executive vice president at Local 1199 SEIU — misused city resources on numerous occasions and mistreated Council employees.

The councilman’s bad behavior didn’t stop despite the investigation, officials charged.

Standards and Ethics hit King with additional allegations he retaliated against his staff and violated ethics rules in September as the probe continued.

“Councilmember King repeatedly intimidated and punished staff who he had thought or would cooperate with the committee’s investigation,” Matteo said Tuesday, detailing King’s attempts to derail the probe. “Of the three staffers who admitted they had cooperated – one was driven out of his office, he attempted to fire another.”

He added: “And the third must have clearly gotten the message because even a subpoena wasn’t enough to compel that staffer’s cooperation.”

The repeated misbehavior came in spite of King’s sensitivity training last year.

Records obtained by The Post showed that taxpayers shelled out $3,500 for the full day of sessions following King’s first admonishment by the ethics panel.