With 11 days left in their contract, and three bargaining sessions down, the union is still far apart with building owners.
The strike could have devastating impacts on the shipping industry, including shortages and driving up the cost of goods.
Union members rejected the contract agreement and will begin a strike at midnight PT.
The union that represents school bus drivers has reached a tentative agreement with the three largest school bus companies, essentially averting a widespread strike in New York City.
Temperatures have been known to exceed 120 degrees in the cargo areas of the trucks, according to the union.
The president of New York City's largest teachers union is pushing for a new contract for city educators.