The role of the principal contractor is defined by Health and Safety Executive (HSE) as “the contractor with control over the construction phase of a project involving more than one contractor. They are appointed in writing by the client (commercial or domestic) to plan, manage, monitor and coordinate health and safety during this phase.”
A client must appoint a principal contractor in writing for any project that involves more than one contractor. It’s best practice to appoint a principal contractor before the construction phase of a project begins. This is so that the principal contractor can plan the work and liaise with both the client and the principal designer to identify any health and safety risks.
A principal contractor must be able to demonstrate that they have the necessary skills, experience and knowledge (SKE) to carry out the task to which they are appointed. SKE can be demonstrated by the membership in professional bodies and by references from previous construction work.
An organisation can also be appointed as the principal contractor. In this case, the organisation must demonstrate that it has the organisational capability to fulfil the role.
According to HSE, organisational capability can be demonstrated by membership of Safety Schemes in Procurement (SSIP). You can gain membership to an SSIP scheme through CHAS Standard.
CDM 2015 distinguishes between domestic and commercial clients. A domestic client is one that commissions construction work to be carried out on their home, whereas a commercial client is one that commissions construction work as part of a business.
Commercial clients have specific responsibilities under CDM 2015, but in the case of domestic clients, these responsibilities pass in full to the contractor (for single-contractor projects) or the principal contractor in cases where more than one contractor has been engaged.
