A new mandatory bereavement pay bill is awaiting Gov. Cuomo’s signature — and it would give every employee in the state 12 weeks of paid time off if they suffer a death in the family.

The legislation, which quietly passed the Senate and Assembly in the waning days of the legislative session, would be an addition to the state’s Paid Family Leave law, which went into effect in January.

The current law gives employees paid time off to bond with a new child or care for a sick relative.

The bereavement provision would cover the death of a worker’s spouse or domestic partner, child, parent, parent-in-law, grandparent or grandchild.

The prospect of giving three paid months off for bereavement to every worker had employers mourning their bottom lines Wednesday.

“For a small business, I don’t know how anybody could survive with anything like that,” said Tom Grech, president of the Queens Chamber of Commerce, which had supported the earlier leave law.

“At the end of the day, New York City and New York state are among the most expensive places to do business in the country. This just puts another burden on small businesses.”

The Business Council of New York State also opposes paid bereavement.

“Who this really affects are the small employers who are being hit with another burden that’s difficult to manage,” group spokesman Zach Hutchins said.

Under the Paid Family Leave law, workers can collect a portion of their average weekly wage — ranging from 50 to 67 percent as the law is phased in — but capped at the corresponding amount of the statewide average.

The state average weekly wage is currently $1,357, according to the Department of Labor, which means the most anyone can currently collect is about $680 a week.

The law guarantees a worker the same or comparable job when they return from leave, and bars employers from cutting off health insurance.

The bereavement provision was sponsored by state Sen. Rich Funke (R-Fairport) and Assembly Majority Leader Joseph Morelle (D-Rochester), both of whom had adult children who died.

“Those who have suffered similar tragedy in their lives understand there is no timetable on grief. Everyone is different,” Funke said before the Senate passed the measure on June 19.

The bill has yet to be presented to Cuomo.

“We’ll review the bill,” Cuomo spokeswoman Dani Lever said.