This two-group three-wave longitudinal study assessed the impact of health promotion interventions on stress and work performance of employees. Survey data were collected during a one year period from staff at public high schools in Minnesota (total N = 208). One school was the treatment site, which received monthly psychosocial educational interventions from the EAP, and two other schools were control sites. Statistical tests demonstrated that the delivery of multiple, brief, educational interventions appeared to have a small but positive impact on reducing overall stress level, increasing utilization of employee assistance program counseling services, and improving job performance and absenteeism.