How long is the SSSTS course and how long is the certificate valid?

The course itself runs over two days, usually with some self-study outside the classroom. The SSSTS certificate is valid for five years. To renew it you sit the one-day SSSTS Refresher course before your certificate expires — if you let it lapse you have to sit the full two-day course again.

Is SSSTS a legal requirement for site supervisors?

No. SSSTS is not written into law. However, it has become the de facto industry standard and most main contractors and employers now require it before they will let you supervise a work area. Employers use it as evidence that you understand your duties under the Health and Safety at Work Act and the CDM Regulations.

What is the difference between SSSTS and SMSTS?

SSSTS is a two-day course for supervisors — people who oversee a gang, a trade or a work area. SMSTS is a five-day course for site managers and those with overall responsibility for a site or project. SSSTS focuses on supervising safely day to day; SMSTS goes deeper into planning, organising and managing the whole site.

Do I need SSSTS to get a gold Supervisor CSCS card?

The gold Supervisor card requires an approved supervisory NVQ or SVQ at Level 3 or 4, plus a pass in the Managers and Professionals CITB HS&E test. SSSTS on its own does not get you the card, but it is the training most supervisors do first and it covers much of the same ground as the HS&E test at that level.

What Is the SSSTS Course? A Site Supervisor's Complete Guide

Q: What is the SSSTS course?

SSSTS stands for Site Supervision Safety Training Scheme. It is a two-day CITB course designed for construction site supervisors, or workers stepping up into a supervisory role. It covers health and safety law, risk assessments and method statements, site inductions, toolbox talks, and how to monitor site activity and intervene when you see bad practice.

If you have been on site a few years and your foreman has started asking you to run a gang, sign off a permit, or brief a method statement, you have already started supervising — whether or not the job title has caught up. At some point someone is going to ask whether you hold your SSSTS. This guide explains exactly what that course is, what happens over the two days, and where it fits alongside your CSCS card.

What SSSTS Actually Stands For

SSSTS is the Site Supervision Safety Training Scheme, written and awarded by the Construction Industry Training Board (CITB). It is a two-day course aimed at people who supervise a work area, a trade gang or a package of works on a construction or civil engineering site.

The CITB SSSTS is a two-day course designed by the Construction Industry Training Board. It aims to equip construction site supervisors, or those individuals wishing to take up such a role, with the essential knowledge required on health and safety regulations.

The key phrase there is “or those individuals wishing to take up such a role”. You do not have to already be a supervisor to sit SSSTS. Plenty of skilled tradespeople take it precisely because they want to move up, and holding the certificate is what gets them considered in the first place.

Who the Course Is For

SSSTS is pitched at:

Working foremen and chargehands who run a gang but still work on the tools
Trade supervisors overseeing a specific package — groundworks, M&E, cladding, fit-out
Experienced operatives stepping up, often holding a blue Skilled Worker card and looking towards a gold Supervisor card
Anyone deputising for a site manager on smaller sites

If you have overall responsibility for an entire site or project, SSSTS is the wrong level — you want SMSTS, the five-day Site Management Safety Training Scheme. As a rough rule: if you are supervising people, SSSTS. If you are managing a site, SMSTS.

What You Cover Over the Two Days

The syllabus is broader than most people expect for a two-day course. Delegates will work through:

Health and safety law and how it applies to supervisors — principally the Health and Safety at Work etc. Act 1974 (HASAWA) and the Construction (Design and Management) Regulations 2015 (CDM), plus the supporting regulations you meet daily such as COSHH, RIDDOR and the Manual Handling Operations Regulations
Supervisory responsibilities in controlling site safety — what is actually yours to control, and what you escalate
Risk assessments and the need for method statements — reading, applying and challenging RAMS rather than just signing the sheet
Effective site inductions, toolbox talks and method statement briefings — how to deliver information so it actually lands with the people doing the work
Monitoring site activities effectively — what to look for on a walk round and how to record it
Timely intervention when bad practice is identified — stopping work, having the conversation, and following it up

The delivery is deliberately hands-on. Rather than sitting through two days of slides, you work through case studies, classroom discussions, group work and individual or group presentations. Most providers also set self-study outside the course hours, so plan for some evening reading between the two days.

Why the Intervention Module Matters Most

If there is one part of SSSTS that separates a good supervisor from a paper one, it is the section on intervention. Knowing that a ladder is not footed or that someone is cutting blocks without RPE is the easy part — nearly everyone on site can spot that. Being the person who walks over, stops it, and has the conversation without it turning into an argument is the skill the course is trying to build.

That is why the course leans on case studies and presentations rather than lectures. You practise the conversation in a room before you have to have it on a scaffold.

The Three Real Benefits

Improved site safety

Accidents do not just hurt people — they stop work. Every reportable incident brings an investigation, a stand-down, and often a visit you did not want. Supervisors who can identify and manage risk properly keep the job moving as well as keeping people safe. The course frames safety and productivity as the same conversation, not competing ones.

Legal compliance

As a supervisor you are the person who sets and maintains the safety standard in your area. The course makes sure you understand your duties under HASAWA, CDM 2015 and the rest of the framework.

This not only protects you and your colleagues but also minimises the risk of legal action or potential fines in case of incidents.

That is not scaremongering. Supervisors have personal duties, and “nobody told me” is a poor defence when the HSE is asking why a task went ahead without a safe system of work.

Recognition by employers

Whilst the CITB SSSTS is not a legal requirement, it has become the de facto standard throughout the industry and is increasingly required by employers when employing site supervisors.

This is the practical reason most people book it. SSSTS is not law, but it is the certificate that appears on the job advert. Main contractors use it as a shorthand for “this person understands health, safety and welfare best practice”, and on many sites you will not be permitted to hold a supervisory position without it.

Where SSSTS Sits Alongside Your CSCS Card

This trips people up regularly, so it is worth being precise: SSSTS is a training certificate, not a CSCS card. They are two different things and you need both.

The CSCS card scheme runs on qualifications and HS&E test passes:

Green Labourer card — CSCS Health and Safety Awareness course plus the Operatives HS&E test
Red Trained Operative card — for those who have completed training but not yet the full NVQ
Blue Skilled Worker card — NVQ/SVQ Level 2 plus the Operatives HS&E test
Gold Supervisor card — a supervisory NVQ/SVQ at Level 3 or 4, plus the Managers and Professionals HS&E test
Black Manager card — NVQ/SVQ Level 5, 6 or 7 in a management discipline, plus the Managers and Professionals HS&E test

SSSTS does not, by itself, get you a gold card. What it does is give you the underpinning knowledge for the supervisory role — and much of that knowledge overlaps heavily with the Managers and Professionals HS&E test you will need to sit. If you are working towards a gold card, doing SSSTS first makes the test considerably easier. Our guide to CSCS card types sets out exactly which card matches which qualification route.

If you have not yet passed the HS&E test at all, start with our practical guide to passing the CSCS HS&E test — the Managers and Professionals version has 52 questions and a higher pass mark than the Operatives paper, so it pays to prepare properly.

Renewal: Don’t Let It Lapse

Your SSSTS certificate lasts five years. Before it expires you sit the one-day SSSTS Refresher to revalidate it for another five.

The important detail: if you let the certificate expire, the refresher route closes. You go back to the full two-day course and the full fee. Set a reminder two or three months out — it is one of the most common and most avoidable expenses in the industry.

How to Prepare Before You Turn Up

The course is short and the pace is brisk. A bit of groundwork pays off:

Get comfortable with the basics of HASAWA and CDM 2015 — who the duty holders are and what each is responsible for
Read a real RAMS from your current site properly, start to finish, and note anything you do not understand
Think about the hierarchy of control (eliminate, substitute, engineering controls, administrative controls, PPE) — it underpins most of the risk assessment content
Know your RIDDOR reportables — specified injuries, over-seven-day injuries, dangerous occurrences
Work through some supervisor-level practice questions so the terminology is familiar before day one. Our SSSTS knowledge check covers 25 questions with full explanations and is a good self-assessment.

You do not need to walk in knowing the syllabus. But the delegates who get the most out of the two days are the ones who arrive already thinking in terms of duty holders, controls and safe systems of work rather than meeting those ideas cold.

How CSCS Mastery Fits Into This

Preparing for SSSTS — and for the supervisory role that follows it — is exactly what our SiteSafetyPlus app is built for.

It includes over 900 SSSTS and SMSTS practice questions covering health and safety law, CDM 2015 duty holders, risk assessment and method statements, site inductions and toolbox talks, monitoring and intervention, and the reporting requirements under RIDDOR. Every question comes with a detailed explanation of why the correct answer is right and why the others are wrong, so you are building understanding rather than memorising answers — which matters when the course assessment asks you to apply the knowledge rather than recite it.

The app also includes full-length mock tests so you can work under timed conditions, plus practical on-site tools: an F10 notification checker, a risk-matrix calculator, permit-to-work templates and a RIDDOR reporting reference you can pull up on your phone in the site cabin.

Head to our site safety section to start practising before your course date. Whether you are booking SSSTS for the first time, revalidating with the refresher, or working towards a gold Supervisor card, the preparation you do beforehand is what turns two days in a classroom into a skill you actually use on site.