Amazon.com Inc. will pay one-time bonuses of $500 to most frontline workers who helped keep the company’s e-commerce operations running during the coronavirus pandemic this month.

The bonuses, which Amazon announced in a blog post on Monday, will cost the company some $500 million, said Dave Clark, the senior vice president who oversees Amazon’s logistics group.

“Our front-line operations teams have been on an incredible journey over the last few months, and we want to show our appreciation with a special one-time Thank You bonus.”

Full-time warehouse workers, delivery drivers, and Whole Foods Market employees will receive $500. Employees and contractors may receive different amounts based on their role, the company said, from $3,000 for the owner of one of Amazon’s delivery franchises to $150 for drivers in Amazon’s (AMZN) gig-economy Flex driver program.