Use this formula for productivity savings
Researchers calculated the productivity benefits for 890 employees enrolled in a telephone coaching obesity management program, using these assumptions based on previous research:1
If a person loses significant weight and also reduces another risk factor, 40 hours of productivity are gained annually due to reduced presenteeism.
An additional 20 hours are gained for those who lose significant weight and reduce a third risk factor.
An additional 20 hours are gained for those who lose significant weight and reduce a fourth risk factor.
An additional 10 hours are gained for those who lose significant weight and reduce a fifth risk factor.
Thus, the maximum productivity gain from losing weight and modifying another health risk factor is 90 hours. Annual productivity gain was monetized by multiplying total hours of productivity gained in the year by the participant's average hourly wage.
1. Burton WN, Chen CY, Conti DJ, et al. The association between health risk change and presenteeism change. J Ocx Environ Med 2006; 48:252-263.