CDM 2015: Contractor Duties
The main duty of a contractor is to plan and manage construction work under their control.
This is so it is carried out in a way that controls risks to health and safety. They have a range of other duties that depend on whether more than one contractor is involved in the project.
If so, their duties entail co-ordinating their activities with others involved in the project team – in particular, complying with directions given to them by the principal designer or principal contractor. If there is only one contractor for the work, they have responsibilities to prepare a construction phase plan and prevent unauthorised access to the site. Where contractors are involved in design work, including for temporary works, they will carry out duties as designers.
The HSE and CITB have produced specific guidance which can be viewed below.