Thousands of New York City building workers have voted to authorize a strike - one that could impact more than 1.5 million residents.

Members of 32BJ SEIU say proposals on the table would shift health care costs onto workers and create a lower-paid tier, while failing to keep up with the rising cost of living.

The union represents about 34,000 workers, including doormen, porters and superintendents, who maintain more than 600,000 households across the city.

The union says proposals from building owners are “Insulting."

But the Realty Advisory Board, which represents building owners, says its offer includes fair wage increases, while asking employees to share in health care costs, citing economic pressures like rent regulations and rising expenses.

If no agreement is reached before the contract expires on April 20, a strike could disrupt essential services in residential buildings for more than 1.5 million New Yorkers.