Want an Apple Watch for just $25? All you have to do is get in shape.

That’s the deal several companies are offering their employees, as part of a wellness-incentive program offered through the health-services firm Vitality Group, according to a report in the Wall Street Journal.

There’s a catch, however: You have to use the watch to help meet monthly fitness goals or pay the full price.

“The program is rolling out this year to employees of biotech firm Amgen Inc., medical group DaVita HealthCare Partners Inc. and Lockton Cos., an insurance brokerage firm,” according to the Journal. ” Later this year, some life-insurance policyholders at John Hancock Financial will also be able to earn the Apple Watch, along with discounts on premiums, for meeting activity goals.”

The deal is part of a growing trend, sparked by reforms in the Affordable Care Act, of firms offering their employees heavy incentives to improve their health. While the Obamacare law tries to discourage companies from providing overly expensive insurance that drives up health care costs, it incentivizes firms to offer big rewards for staying healthy.