In the three years since inception, Healthier Worksite Initiative has worked on a number of demonstration projects, policies, and environmental changes that affect the entire workforce. The activities are guided by an advisory committee made up of representatives from many centers, institutes, offices, and locations. Direct observation, video cameras, and infrared sensors have all been used to track stair usage in past interventions and new technologies are being developed. Healthier Worksite Initiative has worked on improving the stairs and the cafeteria at headquarters and developing a walking trail at a worksite facility. For those outside of the company headquarters, Healthier Worksite Initiative conducted walkability audits at almost every campus, implemented a discount fitness center membership program for employees, and modified a policy that now makes suggestions for healthier foods at company-sponsored meetings and events.