Small businesses can help improve employee health through wellness programs. Research shows programs work best when they focus on both individual behaviors and social/physical environments. Larger employers tend to have more comprehensive programs with higher returns. While results depend on implementation, studies found savings of $3 for every $1 spent within 2-3 years. Best practices include health assessments, screenings, coaching, and incentives for healthy behaviors and environments. Tracking outcomes is challenging but important for evaluating programs. Holistic approaches addressing stress and engagement may boost productivity and retention in addition to health.