January 1 – the day marked by fresh starts and resolutions to lose weight, stop smoking or live a healthier lifestyle. More businesses hoping to make these positive changes stick for their employees are investing in employee well-being programs. But, much like the resolutions themselves, businesses can’t just launch a program and expect it to maintain itself. It takes continued work and a strong commitment.

Workplace wellness is a $40 billion industry and growing, according to estimates from the Global Wellness Institute. This money is being invested in well-being programs, which are designed to encourage healthier lifestyles, curb preventable chronic diseases and ultimately reduce health-care costs for both the company, and individual employees.

Creating sustainable, positive changes through a well-being program can be a challenge. To ensure success, encourage greater engagement and achieve the desired ROI, you should follow these nine best practices identified in a peer-reviewed study conducted by StayWell: