The Site Supervision Safety Training Scheme (SSSTS) is a CITB-accredited course for site supervisors, and for anyone holding supervisory responsibility for three or more employees. Delivered online over two consecutive days by a CITB-qualified instructor, it covers the knowledge needed to supervise a construction site safely.

The course is structured across five modules covering legal responsibilities and management, health and welfare, general site safety, high-risk activities and environmental awareness. This includes the Health & Safety at Work Act 1974, Construction Design Management (CDM), statutory inspections and checks, risk assessments and method statements, reporting accidents and ill health, site inductions and toolbox talks, working at height, excavations and confined spaces.

Assessment is by an exam of 22 multiple-choice questions and three short written questions, with a minimum pass mark of 80%. Four safety-critical questions must be answered correctly in order to pass. Anyone who does not pass first time is offered an immediate resit on the same day.