OSHA and the Council on Certification of Health, Environmental and Safety Technologists (CCHEST) have signed a voluntary agreement to acknowledge the Safety Trained Supervisor in Construction (STS-Construction) certification issued by CCHEST.

Intended for first-line supervisors, the program assesses safety education, training and construction experience, and verifies knowledge through a written examination process to verify that those construction supervisors who meet the stringent criteria for certification also possess knowledge and experience that contributes to achieving safe worksites.

Possession of the STS-Construction certification is not mandatory, and citations will not be issued for failure of construction supervisors to possess the certification, according to OSHA. But employers having an STS-Construction certified supervisor on a worksite will be viewed by inspectors favorably, with the understanding that the construction site is being operated by individuals with demonstrated knowledge and ability, and an indicator of the contractor's commitment to an effective safety and health program.