The modernization of our societies has resulted in a steady increase in service industry occupations tertiarization), which have favored increased sedentary time, while reducing occupational physical activity. In less than 50 years, the United States has increased sedentary professions by about 20%, with a parallel decline in professions requiring physical labor.1 At the same time, French workers spend approximately 10 hours per day sitting without active breaks on work days and about 7.6 hours per day sitting on nonworking days.2 Due to the amount of time that people spend at work, the workplace is now recognized as an opportune setting for promoting an active lifestyle and for developing strategies to reduce sedentary time.3 Although there has been a growing body of literature proposing such strategies over the past 10 years, it is difficult to draw conclusions from this work due to the heterogeneity in research methods and the lack of robust statistical analyses.4,5 Moreover, such workplace intervention strategies appear to suffer from high attrition, as well as a lack of proven sustainability.6,7 Because there is an urgent need to promote physical activity and reduce sedentary time during work time, the French National Conservatory for Physical Activity and Sedentary Behaviors (ONAPS) recently dedicated its annual congress (January 29–30, 2019 in Vichy, France) to this important public health issue. The congress convened an expert panel comprising scientists, public health specialists, occupational physicians, ergonomists, as well as both workers and their employers to examine strategies for improving workplace health. This commentary summarizes the initial conclusions of this expert panel and details the main findings and recommendations regarding the promotion of physical activity and reduction of sedentary time among tertiary employees.