A real-estate salesman says his former boss threw scissors at him, bit him, intentionally sneezed on him — and even urinated on his clothes.

In papers filed in Manhattan Supreme Court, Albert Sultan, 24, says Jack Terzi was the ultimate boss from hell — a physically, emotionally and financially abusive bully who made his days working at Jack Terzi Real Estate a living nightmare.

The days at Terzi’s office didn’t only seem long, they were long — Sultan says that when Terzi hired him as his assistant and a salesman-in-training in 2009, he made him sign a contract requiring him to work Monday through Friday, for 12 hours a day, and 26 Sundays a year.

There were “no vacation/sick days” and Terzi also demanded a “$15 fine for every minute late and $30 for every minute leaving early” on his 8 a.m. to 8 p.m. days. Any Sunday missed cost $1,000, and there also was a $1,000 fine for a “failed secretarial duty,” the suit says.

Sultan says he didn’t get much appreciation for his hard work. Terzi regularly berated him as a “f–king idiot,” a “lowlife” and “a piece of s–t” in front of other people, the suit says.

But that wasn’t the worst of it.

On one occasion, Terzi “urinated on a garment which belonged to [Sutlan] in front of third persons,” the suit says.

He also “physically assaulted” Sultan and “bit him,” and on different occasions, threw a shoe, scissors and a stapler at him, the suit says.

He also “poured shavings” onto Sultan’s food while he was eating his breakfast, and “sneezed in plaintiff’s face in a contemptuous fashion on multiple occasions,” the suit says.

In addition to making it hell to stay there, Sultan’s contract made it impossible for him to leave — it barred him from working for any other real-estate company in any capacity for four years after leaving Terzi’s employ.

Even so, Sultan finally decided earlier this year he’d had enough and quit. He’s now suing Terzi for six months in unpaid wages from 2009, more than $120,000 in unpaid commissions and a court order declaring the non-compete portion of his agreement void. He also wants $5 million in damagesas restitution for Terzi’s “systematic and continuous unlawful harassment”.

Terzi and Sultan could not be reached, and their lawyers did not return calls for comment.

Terzi filed suit against Sultan earlier this week, calling him a disloyal employee who’d quit without any notice. He also accused Sultan of having taken confidential information with him and starting his own competing real estate business.

He’s asking for a court order enforcing the non-compete agreement. A hearing on the fight has been set for Aug. 23.

Additional reporting by Antonio Antenucci and Lorena Mongelli