Amazon.com Inc. is raising the pay of its hourly warehouse workers by at least $1.50 an hour and adding Prime memberships to their benefits.

Amazon also hiked wages for its contracted delivery drivers to roughly $22 an hour as part of a $2.1 billion investment this year.

Amazon’s warehouse workers and delivery drivers, the people critical to the company’s ability to get you things fast via Amazon Prime, will soon get Prime subscriptions as part of their employment. The new perk was revealed along with other benefit updates,