Mamdani on Monday backed the Teamsters-supported Delivery Protection Act, which would bar companies from subcontracting core warehouse and delivery work at last-mile facilities and require workers to be directly employed by the facility operator. “Corporations like Amazon build billion-dollar business models by insulating themselves from accountability through a system of exploitative subcontracting,” the mayor said in a statement. He called the bill “common-sense regulation that protects delivery workers, safeguards the communities where these facilities operate and ensures that the corporations benefiting from workers’ labor are responsible for the consequences of their business practices. ”However, the legislation would foist an extra $664 per year on New York households to get their goods, according to a study by consultancy AKRF. “This law is just going to raise prices for consumers,” Business Council of New York State spokesperson Steve Smith told The Post on Monday.