A married New Jersey exec was pressured into joining her bosses for a night out at Manhattan hot spot 1Oak — where they sexually harassed and groped her, according to a new lawsuit.

Alexandria Chapman, 36, says her nightmare began almost immediately after she attended a work event on Nov. 15 with employer ACV Enviro Corp., a New Jersey industrial waste management firm, court documents claim.

Over her objections, the account executive was ordered into a packed Uber — where ACV’s director of technical services, Seth Whalley, pulled her onto his lap — to head to the hip Chelsea club, according to the Camden County, NJ, civil suit.

Once at 1Oak, ACV chief development officer Kevin Sheppard ordered a bottle of vodka and “relentlessly” pressured the Cherry Hill woman to drink and go with him to the dance floor — where he pressed himself against her, tried to kiss her and groped her butt and breasts, documents allege.

“Sheppard demanded that Plaintiff continue drinking in order to lower her inhibitions and make her an easier target for his intended sexual harassment,” the court papers read.

When Chapman resisted Sheppard’s advances, he told her she’s “so bad,” the court documents say.

Chapman threatened to report him, and Sheppard “forcibly grabbed her by placing both his hands around her neck, violently pushed her against a wall, and held her there firmly,” the papers say. She says she eventually developed bruises from the assault.

“It was terrifying,’’ Chapman told The Post.

Meanwhile, in a moment away from Sheppard, Whalley kissed her neck, too, Chapman says in her suit.

“I had to shove him off me,” she told The Post.

Her suit says that the next day, a male supervisor noticed her bruises, and she told him what happened. He told her to consult a lawyer, the papers say.

Chapman sent an email reporting the abuse to the company’s human resources department Nov. 19, and the next day had a meeting with the CEO and an HR rep, where the latter told her she wasn’t surprised to hear her allegations, the suit says.

The victim went back and forth with HR for months over her complaint, the documents state. Meanwhile, the company gave the men slaps on the wrist, while Chapman was marginalized and forced to work alongside her harassers, her suit says.

“I’m basically being treated like I’m toxic,” Chapman said.

She started therapy because of the situation and has been diagnosed with post-traumatic stress disorder, court documents say.

Chapman’s lawyer, Christian McOmber, said his client filed a report with the NYPD’s SVU unit on Dec. 17. Cops are still investigating, according to the suit. The NYPD did not return requests for comment.

Chapman told The Post that she waited a month to go to cops because she was so traumatized by what happened. She said she also thought Sheppard and Whalley would at least be fired after she told HR.

“This case presents a quintessential example of how sexual harassment is an enduring problem in the workplace and has not been tempered by the #MeToo movement in the slightest,” McOmber told The Post.

Elior Shiloh, the lawyer for the company, said, “Upon learning of her workplace complaint last fall, ACV immediately hired an outside law firm that conducted a thorough investigation.

“We are confident that once all the evidence is presented, ACV will demonstrate … that Ms. Chapman’s claims are without merit. ACV remains committed to providing its employees with a safe working environment. To date, Ms. Chapman has chosen to remain an employee of ACV.”

Additional reporting by Stephanie Pagones and Tina Moore