Contractor management guide

How to manage contractors safely in a shared or occupied workplace

An approved contractor can still create serious risk on the day of work if the site has changed since the documents were reviewed. Contractor management needs a live coordination process, not only a pre-start document gate. HSE says employers sharing a workplace must cooperate, coordinate measures and tell one another about the risks their activities create.

This guide covers offices, factories, care settings, retail, estates and similar places where ordinary operations continue during a contracted job, such as maintenance, cleaning, repairs, inspections and small installations. Construction projects may require fuller duties under the Construction Design and Management Regulations, so do not treat this as a substitute. HSE shared workplaces. HSE using contractors.

A five-stage operational workflow

Use five linked stages. Define the job. Select and brief the contractor. Authorise the start. Monitor and manage changes. Close out and learn. HSE stresses that health and safety starts when the job is planned, not when the contractor arrives, and the sequence should scale with risk. HSE managing contractors, HSG159.

Define the actual job

Write a scope covering what, where, when and under what constraints. Name affected areas and people, including employees, tenants, customers, patients, residents, visitors and other contractors. Share what the site knows that the contractor cannot guess. That includes asbestos information, hidden services, fragile surfaces, isolation points, restricted access, emergency procedures and vulnerable occupants. Decide whether the job must happen during occupancy, because moving an intrusive task to a closure window can remove the interface risk before paperwork is written.

Select and brief for this job

Prequalification asks whether a business may be suitable. The job decision asks whether it has the people, equipment and method for this scope. Hold a short pre-start discussion with the contractor supervisor about the sequence, interfaces, isolations, temporary protection, emergency response, waste route, and who may make a change. If the contractor intends to subcontract, agree how the new people will be assessed and briefed. A document uploaded for the prime contractor should not be assumed to cover an unannounced subcontractor.

A real authorisation point before work starts

At arrival, confirm the job and location match what was approved. Check that the expected people and equipment are present, induction and briefings are complete, isolations and barriers are in place, and affected teams know the plan. This is a practical pause, not a ceremony. If the plan assumes an empty corridor but a clinic has opened there, authorisation waits. Write down the material change and the decision. A signature on an old plan is not evidence that today’s conditions were assessed.

Coordinate simultaneous activities

The highest risk is often at the boundary between tasks. A cleaner may remove a barrier an engineer relied on. One contractor may isolate a system another is testing. A delivery may use a pedestrian route. Make someone responsible for the interface. A short interface table helps, listing the interface, who may be affected, the control, who confirms it and the recheck trigger. Each row prompts local assessment. A permit should define a controlled activity and its conditions, not simply produce a form saying someone is approved.

Occupied premises need an occupant plan

In a care home, school, clinic or rented property, work can affect people who did not choose to be near it. Identify who needs notice, who can consent to access, what must remain available and how to respond if someone enters a restricted area. Do not write a contractor method statement as though the only exposed people are the workers.

Monitor without taking over the contractor’s role

The contractor supervises its own work. The host checks that agreed controls are followed and its site stays safe. Monitoring intensity rises with hazard, uncertainty and consequences. Record exceptions, not meaningless identical ticks. A note such as work paused at 10:15 because another contractor needed the isolation, revised sequence agreed at 11:00, tells the next manager what happened. Agree stop-work and restart criteria: who can stop the task, how people and equipment are made safe, who is notified, and what evidence is needed before restart.

Manage scope changes deliberately, then close out

Small jobs expand. A plumber fixing a leak finds damaged wiring. Separate the original approved task from the new work, identify the new hazards, involve the relevant people and agree a revised method before continuing. While you are here is not a risk assessment. At completion, confirm the work is finished or document what remains open. Check barriers and equipment are removed, services restored, waste managed, affected people informed and the area safe for its next use. Keep the final evidence with the job, not scattered by document type.

FAQs

Does a valid contractor accreditation mean the job is safe?

No single accreditation can describe every site and task. Use it as part of evidence about a business, then assess competence, people, equipment and method for the specific job, and check actual conditions before work starts.

Who is responsible when several employers share a workplace?

Each employer keeps its own duties and they must cooperate, coordinate their measures and share information about risks their activities create for others. Document named contacts and arrangements rather than assuming the main contractor or landlord automatically does everything.

Is a RAMS enough to authorise work?

A risk assessment and method statement describe the planned method and controls, but the site must still check the document matches the job and conditions. Changes in occupancy, sequence, other contractors or equipment may need a new decision. Check the job at arrival and keep checking as work proceeds.

How often should the host inspect contractor work?

The level of contact should fit the risk and nature of the work. Agree monitoring points before work begins, then add checks when conditions change or concerns arise. HSE does not set one universal interval for all contractor jobs.

Where Complys fits

Complys can keep contractor onboarding evidence, worker and site information, inductions, permits and incident actions connected to a job. The site and contractor still need competent people to assess the work and act on changing conditions. Confirm which coordination views exist in the current product before relying on them.

Contractor compliance Permit to work

Sources

In this series: contractor competence vs accreditation, contractor scope changes, contractor completion evidence.