Site Supervisor vs Site Manager: Roles, Cards and Pay

A site supervisor runs the work on the ground. That means one gang, trade or area, day to day, done safely and to spec. A site manager runs the whole site. That means the programme, the subcontractors, the budget and the safety arrangements for everyone. Supervisors usually hold the CITB SSSTS course and a CSCS Gold Supervisor card. Managers usually hold SMSTS and a Black Manager card. Managers also earn more.

What is a site supervisor?

A site supervisor oversees a crew and makes sure the work gets done right. The Office for National Statistics describes the job as overseeing operations and directly supervising the workers in construction and building trades. Foreman, site foreman and construction supervisor all sit under the same heading.

Day to day, you brief the gang, check the work against the method statement and chase the schedule for your area. You stop unsafe work, and you report progress and problems up to the site manager. You're still close to the tools, but you answer for other people's work now.

What is a site manager?

A site manager runs the whole site. ONS puts them in the same group as construction managers, people who direct the resources for a build. They deal with the client, architect and engineers, and check that materials and methods meet the specification and the law. When the client or an inspector turns up, they're the one who answers.

Who carries the CDM 2015 duties?

This is where job titles and the law part ways. The Construction (Design and Management) Regulations 2015 never use the words site manager or site supervisor. The duties fall on companies, called duty holders. Your employer decides who does the work.

The principal contractor is the firm the client appoints to control the build when there's more than one contractor. Under CDM 2015 it must:

• Draw up a construction phase plan before the site is set up (regulation 12).
• Plan, manage, monitor and coordinate the construction phase, including how the contractors work together (regulation 13).
• Provide inductions and welfare, and keep unauthorised people out.
• Consult workers on health, safety and welfare (regulation 14).

Every contractor, including each subcontractor, has its own duties under regulation 15. It must plan, manage and monitor its own work. It can only use people who have, or are getting, the skills and training for the task. And it must give each worker "appropriate supervision, instructions and information".

Typically, the site manager carries out the principal contractor's duties on site, and the supervisor carries out the contractor's supervision duty for their gang. That's a common arrangement, not a rule. Your construction phase plan says who's named for what.

Side by side

	Site supervisor	Site manager
Runs	One gang, trade or area	The whole site
CDM duty they usually carry out	A contractor's supervision duty	The principal contractor's duties
CITB safety course	SSSTS, 2 days	SMSTS, 5 days
CSCS card	Gold Supervisor	Black Manager
NVQ or SVQ for the card	Supervisory or technical, Level 3 or 4	Management or technical, Level 4 to 7
HS&E test for the card	Specialist (supervisory)	Managers and Professionals
Median full-time pay, ONS	£45,021	£56,021 (group includes directors)

Sources: CITB, CSCS and ONS ASHE 2025 provisional. Accurate as of September 2026.

The jump from supervisor to manager needs a new qualification at every level, not just more years on site.

Training: SSSTS for supervisors, SMSTS for managers

Both are CITB Site Safety Plus courses, run in a classroom or remotely.

The Site Supervision Safety Training Scheme (SSSTS) takes two days. It's for people who have, or are about to have, supervisory responsibilities. It covers the law, risk assessment and leading a safe crew.

The Site Management Safety Training Scheme (SMSTS) takes five days. It covers health and safety law, CDM 2015, site set-up, occupational health and the environment. CITB suggests anyone without safety management experience sits SSSTS first.

Neither has formal entry requirements. Both certificates last five years, and you renew by retaking the course or doing the refresher before expiry. Neither is a legal requirement, but the Build UK Training Standard says its contractor members require SSSTS or an equivalent for supervisors, and SMSTS or an equivalent for managers.

Cards: Gold Supervisor and Black Manager

SSSTS and SMSTS don't get you a card on their own. The CSCS supervisor and manager cards need an NVQ or SVQ.

• Gold Supervisor card. You need a construction supervisory or technical NVQ or SVQ at Level 3 or 4, plus the CITB Specialist Supervisory HS&E test.
• Black Manager card. You need a construction management or technical NVQ or SVQ at Level 4, 5, 6 or 7, or an SVQ at SCQF Level 10 or 11. You also need the CITB Managers and Professionals HS&E test.

Both cards last five years. For either one, your HS&E test pass must be from the last two years.

Already doing the job without the NVQ? The CSCS Experienced Technical, Supervisor or Manager card covers you while you study. It lasts three years and can't be renewed, so the NVQ has to be finished by then.

What each role pays

The latest ONS Annual Survey of Hours and Earnings tables came out on 23 October 2025. They cover full-time employees for the tax year to 5 April 2025.

• Construction and building trades supervisors had median pay of £45,021. The middle half earned between £37,035 and £53,679.
• Production managers and directors in construction had median pay of £56,021. The middle half earned between £42,575 and £70,710.

There's no ONS figure for site managers alone, and their group includes company directors. ASHE also leaves out the self-employed, so day-rate contractors aren't counted.

Stepping up from supervisor to manager

As a supervisor you follow the construction phase plan. As a manager you usually run it and answer for it. The paperwork changes too. You'll need a management NVQ at Level 4 or above, and the Managers and Professionals test. SMSTS is the CITB course built for the role. Our guide on how to get promoted in construction walks through each step, from labourer up.

What makes a good site manager

Tickets get you the job. These habits keep you in it.

• Responsibility. Everyone is inducted, every card is checked and every incident is written up the same day.
• Leadership. Run a short morning briefing, be seen on site and settle disputes by the contract.
• Organisation. Keep permits and method statements to hand, and book labour, plant and materials so nothing stands idle.
• Communication. Plain English for operatives, detail for engineers, and early warnings for the client.

Where to start

If you're managing already, our NVQ Level 6 Diploma in Construction Site Management leads to the Black card. It's portfolio-based, with an assessor, and usually takes 8 to 12 weeks. Browse our construction courses for the shorter tickets. When you apply, our guide to writing a construction manager CV shows how to list them.

Frequently asked questions