Update: The woman’s Powerball win was later revealed to be a prank.

Managers at a California nursing home say they have the best boss ever — because one of the 18,000 Powerball tickets he bought for employees and residents hit a share of the $1.5 billion jackpot for a senior nurse.

The lottery miracle played out at the Park Avenue Healthcare & Wellness Centre in Pomona, a short drive from the 7-Eleven where one of the three winning tickets were bought for Wednesday night’s drawing nationwide.

The other two were sold in Tennessee and Florida, where no winners have yet been identified.

Workers at the nursing home — with the exception of the winner — gathered around a television to watch the live drawing while clutching the tickets purchased for them by chain owner Shlomo Rechnitz, said David Levy, senior manager for the center.

About 30 minutes later, the big winner’s kids called and told her to check her numbers.

“Her reaction was that she didn’t believe it. She then pulled out her ticket and reviewed it with two other nurses — number by number,” said Levy. “And then she freaked out.”

Levy described the winner as a 62-year-old married mom of seven kids — six of them nurses themselves.

Despite the windfall, she finished her shift and didn’t go home until 11:30 p.m., according to Levy.

“Oh my gosh, it couldn’t have happened to a better person,” Levy said. “There’s no sweeter person.”

When contacted by the Los Angeles Times, the woman’s daughter claimed that her mother did not win the jackpot and the celebration was due to a “misunderstanding” of a photo sent to the nurse.

But a spokesman for Park Avenue Healthcare & Wellness Centre, Josh Nass, told The Post that the winning ticket was not a hoax and the nurse’s entire family had arrived at the center after her shift to congratulate her.