(NewsNation) — Amazon workers at a New York City facility are just the latest to walk off the job during the final crucial days of the holiday season, presenting a challenge for Amazon as it races to fulfill Christmas deliveries.

Those Amazon workers, affiliated with the Teamsters union, are demanding safer working conditions and better pay.

The subcontracted drivers argue that they should get paid the same as USPS workers or UPS drivers, but currently, they make about half of that at about $22 an hour.

“We should be paid compensatory to what we are worth,” one protestor told NewsNation. “We are worth far more than $20 an hour.”

The Teamsters have tried to get Amazon to come to the negotiating table since last year when the labor organization first said it had unionized a group of delivery drivers in California who work for a contractor.

Amazon — which denies it employs the workers — refused, leading the union to file unfair labor charges against the company at the National Labor Relations Board.

The e-commerce giant has repeatedly refused to recognize the union, and Amazon identifies them as subcontractors.

Amazon’s need for delivery drivers is much higher around the holidays, so these union workers hope threatening late package arrivals will force Amazon to the bargaining table after they ignored a Dec. 15 deadline for negotiations.

Amazon, meanwhile, says that these demonstrations won’t keep customers from getting their packages on time.