Gov. Andrew Cuomo approved a new bill bolstering elevator safety in the aftermath of a gruesome Manhattan accident that killed a man — but its rollout by state government will delayed by two years under a deal he struck with lawmakers.

The measure will require the state Labor Department license mechanics and others who oversee the maintenance of 70,000 elevators in the city buildings and require more extensive education and training.

It also creates a nine-member Elevator Contractors License and an Elevator Safety and Standards Board, with members appointed by the governor and legislative leaders.

But, in a compromise to win Cuomo’s signature, lawmakers agreed to amend the bill and have state government delay implementation of the “Elevator Safety Act” from June until January 2022, one of the bill sponsors told The Post.

But the same agreement pushes up the time for New York City government to comply with the new licensing requirements from three years to two years. Most of the elevators are in city buildings.

“We were able to find compromise on some technical issues that allowed for the codification of a bill that will improve standards and safety for workers and all New Yorkers,” said state Sen. Diane Savino (D-Staten Island).

The new law — also sponsored by Assemblyman Marcos Cresco, the Democratic power broker in The Bronx — followed the tragic death of Sam Waisbren, who was crushed by an elevator in a Kips Bay building in August.

That accident in the Manhattan Promenade tower is still under investigation by the city’s  Department of Investigation.

And Waisbren’s family is prepping to file a wrongful death suit in the case.

“For too long unsafe and defective elevators have led to unnecessary injuries and even deaths, and this new law will help ensure all individuals working with elevators have the proper training and credentials to make sure these machines meet the safety standards necessary to provide reliable service,” said Cuomo in a statement.

There are other revisions Savino and Crespo compromised on to win Cuomo’s conditional approval of the bill.

Savino said they also agreed to a technical change that would exempt the interior or decor of elevators — aesthetics not related to safety — from the new regulations.

Additionally, the city’s Department of Buildings will get the authority to impose its own stricter requirements on elevator mechanic licenses. That’s a turnabout for City Hall, which opposed the elevator safety bill in previous years.

The law is backed by the International Union of Elevator Constructors (IUEC) Local 1, which has long sought licensing rules to toughen elevator safety in New York by setting minimum education and training standards for elevator mechanics.

“After a decade of hard work, New York is finally taking an important first step forward in elevator safety,” said IUEC Local 1 business manager Lenny Legotte, who thanked Savino and Crespo for their advocacy and Cuomo for approving the legislation.

But Legotte suggested more work needs to be done.

“As we work towards implementation, we remain committed to building on this progress and to one day making New York a national leader in elevator safety,” he said.

More than 30 other states already have similar laws in place.