A Construction Health and Safety Technician (CHST) will typically be found overseeing the health and safety aspects of a construction worksite. CHSTs are usually employed by a company that provides services to the owner of the worksite, general contractors or subcontractors. To become certified, CHSTs must meet certain educational and experienced based criteria and pass an examination. The exam is computer based and consists of 200 mutiple-choice questions which the candidate has 4 hours to complete. The subjects on the test cover 4 general areas: project management, worksite auditing, training and professional responsibility. To learn more about the CHST exam, see our CHST Test Guide.