SMSTS vs SSSTS: Which CITB Course Do You Need?

SMSTS or SSSTS? It is one of the most common questions in UK construction training, and getting it wrong is expensive: booking a five day course you did not need, or arriving on site with a certificate your contract does not recognise. The two courses sit side by side in the CITB Site Safety Plus suite, but they are written for different jobs.

This guide sets out exactly what each course covers, who it is for, how the assessments compare and which one employers will expect for your role, so you can book the right course with confidence.

The Short Answer

If you manage a site, or you are responsible for planning, organising, monitoring and controlling how work is delivered, you need the SMSTS course. If you supervise workers day to day under a site manager, you need the SSSTS course. Job titles vary from firm to firm, so judge it on responsibility rather than on what it says on your badge or your CV.

What the SSSTS Covers

The Site Supervision Safety Training Scheme is a two day course for first line supervisors: gangers, chargehands, foremen and working supervisors. It concentrates on the practical supervision of health and safety, including:

• The legal duties a supervisor holds under the Health and Safety at Work etc. Act 1974 and related regulations.
• Working with risk assessments and method statements, and stopping work when the task no longer matches the paperwork.
• Delivering site inductions and toolbox talks.
• Supervising high risk activities such as working at height.
• Occupational health and behavioural safety at gang level.

The emphasis throughout is on the front line: spotting problems, correcting unsafe behaviour and keeping your gang working safely within the system the site manager has put in place.

What the SMSTS Covers

The Site Management Safety Training Scheme is a five day course for site managers, agents, project managers and anyone with overall responsibility for a site or a section of the works. It goes considerably deeper than the SSSTS, covering:

• Health and safety law and the manager's legal accountability, including the Construction (Design and Management) Regulations 2015.
• Planning and organising a site: risk assessments, method statements, inductions and consultation with the workforce.
• Managing high risk operations, including excavations, working at height, scaffolding, demolition and lifting operations.
• Site set up, welfare, fire safety and emergency arrangements.
• Occupational health, environmental management and monitoring site performance.

Where the SSSTS asks how you supervise safe work, the SMSTS asks how you design, resource and manage a safe site from the ground up. Guidance on the duties that CDM 2015 places on those who organise construction work is published by the Health and Safety Executive.

Key Differences at a Glance

• Length: the SMSTS runs for five days; the SSSTS runs for two. Both are widely available as consecutive day blocks, day release over several weeks, or virtual classroom delivery.
• Audience: the SMSTS is for those who run sites; the SSSTS is for those who supervise gangs and work areas.
• Depth: both cover similar ground in law, risk and high risk activities, but the SMSTS goes much further into planning, management systems and accountability.
• Refreshers: both certificates last five years. The SMSTS refresher takes two days and the SSSTS refresher takes one day, and each must be completed before the current certificate expires.
• Cost and time commitment: a five day course naturally costs more and takes you away from site for longer, which is exactly why booking the right course first time matters.

Which Course Will Employers Ask For?

On most major projects the expectation is straightforward: the site manager holds a current SMSTS and supervisors hold a current SSSTS. Principal contractors commonly write these requirements into their procedures and subcontract orders, so the question is usually settled by the contract rather than by personal preference. If you are unsure, check the requirements in your contract documents or ask the principal contractor before you book anything.

If you are a supervisor with ambitions to manage, going straight to the SMSTS is allowed: there is no requirement to hold the SSSTS first. The sensible test is your current role. If you are not yet doing the planning and organising that a manager does, the SSSTS will serve you better today, and the SMSTS can follow when the responsibility does.

Do You Need the SSSTS Before the SMSTS?

No. Neither course has formal entry requirements, and the SSSTS is not a prerequisite for the SMSTS. Plenty of managers hold both because they moved up through supervision, but you can book the SMSTS directly if your role justifies it. Be honest with yourself here: the SMSTS assumes you are, or are about to be, responsible for managing a site, and the course exercises are pitched at that level.

Neither Course Is a CSCS Card

A common misunderstanding is worth clearing up: SMSTS and SSSTS are Site Safety Plus training certificates, not CSCS cards. Sites often ask supervisors and managers to hold both the relevant course certificate and an appropriate CSCS card, and the card route involves its own qualifications plus the CITB Health, Safety and Environment test. If the card side of things is new to you, our guide to CSCS card types explains which card fits which role.

How the Assessments Compare

Both courses end with a multiple choice exam, and in both cases the trainer also assesses your participation in exercises and discussion across the course. The question style comes from the same family: scenario based, with several plausible answers, asking what you should do first or which action is most appropriate. Both papers include safety critical questions where the correct answer carries particular importance.

The practical difference is scope. The SSSTS paper examines two days of material focused on supervision. The SMSTS paper examines five days of material and expects a manager's perspective, which is a heavier revision load and a stronger argument for structured preparation well before the course begins.

Preparing for Either Course

Whichever course you book, preparation follows the same pattern: understand the exam format, learn the core legislation and rehearse with realistic practice questions. The mock tests on this site cover both SMSTS and SSSTS question styles and are the fastest way to find your weak topics before the course starts.

If you are heading for the five day course, our complete guide on how to revise for the SMSTS course breaks the workload into a manageable plan. If you have settled on the supervisor route, the SSSTS mock test guide walks through the exam itself and exactly how to prepare for it.

Decision Checklist

Still undecided? Run through these questions:

• Do you plan, organise and monitor the work of others, or deliver work under someone else's plan? Planning points to the SMSTS; delivering under a manager points to the SSSTS.
• Who signs off the risk assessments and method statements on your job? If it is you, think SMSTS.
• What does the principal contractor's paperwork require for your role? Check before booking, because the contract usually answers the question for you.
• Where will you be in two years? Certificates last five, so choose the course that fits the role you are genuinely moving into, not just the badge you wear today.

The Bottom Line

Managers take the SMSTS, supervisors take the SSSTS, and nobody should pay for five days of training when two will do, or arrive on a management contract holding a supervisor's certificate. Match the course to the responsibility, book with an approved provider, and start preparing early with realistic mock tests so that the final exam is the least stressful part of the week.