More than 15,000 nurses walked off the job Monday at three major New York City hospital systems, forcing some of the country’s largest medical centers to scramble for temporary workers during one of the worst flu seasons in recent memory.

According to the AP, the strike hit NewYork-Presbyterian, Mount Sinai, and Montefiore hospitals after weekend negotiations collapsed over staffing levels, benefits, and pay.

Nurses marched outside facilities chanting “Nurses on strike! … Fair contract now!” — a familiar refrain from the 2023 walkout that won significant concessions but, according to workers, hasn’t delivered lasting change.

THE DETAILS: “They don’t want to give us a fair contract, and they don’t want to give us safe staffing, and now they’re trying to roll back on our benefits,” emergency department nurse Tristan Castillo told the AP outside Mount Sinai West. The union says hospitals have given nurses unmanageable patient loads despite promises made after the last strike.

Nurses are also demanding better workplace security — citing an incident last week when police killed a man who barricaded himself in a Brooklyn hospital room with a sharp object — and restrictions on hospitals’ use of artificial intelligence.

BUT BUT BUT: The hospitals are crying poverty while their executives rake in millions. Mount Sinai called the union’s demands “extreme.” Montefiore spokesperson Joe Solmonese labeled them “$3.6 billion in reckless demands.” According to hospital figures, unionized nurses already average $162,000-$165,000 annually before benefits — and they claim the union wants that to balloon to $220,000-$275,000 within three years.

Of course, the hospitals also insist they’ve improved staffing since 2023. The nurses on the picket lines beg to differ.

WHY IT MATTERS: This is the first major labor fight for New York’s new mayor, democratic socialist Zohran Mamdani, who joined the picket line Monday and didn’t mince words. “These executives are not having difficulty making ends meet,” Mamdani said. “They should settle for nothing less” than dignity, fair pay, and respect.

The hospitals remain open with temporary nurses — Mount Sinai alone says it hired 1,400 — but a prolonged strike during flu season could force patient transfers, cancelled procedures, and ambulance diversions. Other city hospitals could get slammed if patients avoid the strike-hit facilities.

BOTTOM LINE: Hospital executives paint nurses demanding livable workloads as greedy radicals while pulling in executive salaries that dwarf anything on the picket line. NewYork-Presbyterian accused the union of staging a strike to “create disruption” — as if the disruption isn’t chronic understaffing that burns out workers and endangers patients.

The 2023 strike proved nurses can win. Now they’re betting they can win again.