Abstract
An incentive strategy for motivating seat belt usage was implemented at an industrial complex where it was possible to compare intervention impact on hourly (blue- collar) versus salary (white- collar) workers. When employees arrived in the morning and departed in the afternoon, seat belt usage was assessed at the plant's separate parking lots for salary and hourly workers. Belt usage increased in the P.M. when incentives were offered in the A.M.; however after the A.M. incentives were withdrawn, belt usage returned to initial baseline levels. Interpretations and implication of the salary vs.hourly differences are discussed.