In 3 different hospital systems there are thousands of nurses going on strike in New York City on monday after negotiations through the weekend.“Nurses on strike! … Fair contract now!” they shouted on a picket line outside NewYork-Presbyterian Hospital’s campus in Upper Manhattan. Others picketed at hospitals in the Mount Sinai and Montefiore systems, where a 2023 nursing strike fed off pandemic-era frustrations and led to a deal to boost staffing and pay.

About 15,000 nurses are involved in the strike, according to their union, the New York State Nurses Association. The hospitals remained open, hiring droves of temporary nurses to try to fill the labor gap.

The strike involves private, nonprofit hospitals, not city-run ones. But the strike, which the union casts as lifesaving essential workers fighting hospital executives who make millions of dollars a year, could be a significant early test of Mayor Zohran Mamdani’s new administration.