If you're a site supervisor working in UK construction, the SSSTS certificate is one of the most recognised credentials you can hold. It's the benchmark qualification for supervisors across most major construction sites in Great Britain, and it's increasingly required before contractors will let you manage a crew.
This guide covers what the SSSTS certificate involves, how to get it, what the course tests, and how it fits into the wider Construction Skills Certification Scheme (CSCS) and construction safety framework.
SSSTS stands for Site Supervisors Safety Training Scheme. It's a two-day training course and assessment developed by the Construction Industry Training Board (CITB). The course is designed for anyone who supervises construction workers — team leaders, foremen, chargehands, and working supervisors on construction, civil engineering, or demolition sites.
Completing the SSSTS course and passing the test earns you a CITB-approved SSSTS certificate. This certificate is valid for five years, after which you need a refresher course to renew it.
The SSSTS is distinct from the SMSTS (Site Management Safety Training Scheme), which is the next level up for site managers and project managers. SSSTS is supervisory level; SMSTS is management level.
You need the SSSTS if you:
Many principal contractors, Tier 1 firms, and housebuilders now require site supervisors to hold a valid SSSTS certificate before they'll allow them to supervise workers on site. It's becoming as standard as the CSCS card itself at supervisory level.
The CSCS Gold Card for Site Supervisors specifically lists the SSSTS as an acceptable supporting qualification. Without it (or an equivalent NVQ-based qualification), you won't qualify for the Gold Card.
The SSSTS course runs over two consecutive days. It's delivered by CITB-approved training providers and consists of taught sessions and group exercises followed by a written test on day two.
Key topics covered include:
Supervisors need to understand the legal framework they operate within. The course covers the Health and Safety at Work etc. Act 1974, the Construction (Design and Management) Regulations 2015 (CDM 2015), the Management of Health and Safety at Work Regulations 1999, and how these apply to supervisory responsibilities on site. The course makes clear that supervisors have personal legal duties — ignorance of the law isn't a defence on a construction site.
How to conduct a proper site induction, what it must cover, and how supervisors are responsible for ensuring workers under their supervision have received it before starting work.
How accidents happen (immediate causes, underlying causes, root causes), near miss reporting, and what supervisors must do when an incident occurs. RIDDOR (Reporting of Injuries, Diseases and Dangerous Occurrences Regulations) reporting requirements are covered.
How to read and implement a method statement (RAMS), what supervisors must do to ensure their team understands and follows them, and what constitutes a dynamic risk assessment when situations change on site.
Statutory requirements under the Work at Height Regulations 2005, hierarchy of controls, scaffold inspection obligations, edge protection, and permit-to-work requirements for working at height.
Safe excavation procedures, identification of underground utilities, permit requirements, and inspection duties for supervisors overseeing ground works.
Noise, vibration (Hand Arm Vibration Syndrome — HAVS), dust, COSHH (Control of Substances Hazardous to Health), and the supervisor's role in protecting workers from occupational health hazards.
Manual handling regulations, proper techniques, site welfare facilities and requirements under CDM 2015, and supervisor duties around worker welfare.
Site waste, contamination prevention, noise and vibration control in relation to neighbours and the public, and environmental legal obligations.
On day two of the course, you'll take a written assessment. The test consists of 25 questions drawn from the course content. You need to answer at least 18 correctly (72%) to pass and receive your certificate.
The questions are a mix of multiple choice and short answer, covering the topics from both training days. They test your knowledge of the legal framework, your understanding of supervisor responsibilities, and your ability to apply health and safety principles to real construction scenarios.
Most people who've paid attention during the two-day course and taken notes pass on the first attempt. The assessment isn't designed to be a trick — it tests whether you understood the material, not whether you can recall obscure technical details. That said, candidates who drift off during the sessions or try to skip the practical exercises often struggle.
If you don't pass, you can retake the assessment. Different training providers have different retake policies — some allow a retake on the same day or shortly after; others require you to attend the full two-day course again. Check with your provider before assuming you get an immediate second attempt.
SSSTS certificates are valid for five years from the date of issue. To renew, you need to attend an SSSTS Refresher course — a two-day course similar to the original, updated to reflect any changes in legislation or best practice.
You must complete the refresher and pass the assessment before your current certificate expires. If your certificate lapses, you'll need to attend the full SSSTS course again from scratch — not just the refresher.
Book your refresher well before your expiry date, not the week before. Popular providers book up quickly, and certificate expiry can affect your ability to work on certain sites while you wait for a new available date.
The SSSTS and SMSTS are closely related but target different levels of responsibility:
SMSTS holders qualify for the CSCS Black Card (Site Manager). SSSTS holders qualify for the CSCS Gold Card (Supervisor).
If you're currently a supervisor and moving toward a site management role, the SMSTS is your next qualification after the SSSTS — many candidates do both over the course of a career progression.
The Construction Skills Certification Scheme (CSCS) card system operates on a tiered structure linked to qualifications and assessment:
Without a valid SSSTS certificate or supervisory-level NVQ, you can't get the Gold Card. And on most major construction sites, a supervisor without a Gold Card will be turned away from gate — it's that simple.
The two-day course is your primary study resource, but coming prepared helps. Before you attend:
During the course itself: take notes actively, participate in group exercises, and ask questions when something isn't clear. The test reflects exactly what was covered in the room over two days — if you paid attention, you'll know the answers.