Amazon is raising pay for its more than 800,000 US warehouse and transportation workers and giving them free Prime accounts for the first time.

Amazon will offer free Prime benefits to U.S. hourly fulfillment workers starting next year. Will other employees be next?

The free Prime membership, however, is exclusive to front-line workers, the company told Fortune. Corporate employees will still need to shell out the full amount to buy their own subscriptions. However, all employees, both logistics and corporate, will continue to receive 10% off Amazon merchandise, up to a maximum discount of $100 per year.