Introduction to Health and Safety at Work: The Handbook for the NEBOSH National General Certificate, Second Edition

These Regulations apply to building operations and works of engineering construction as defined originally by the Factories Act 1961.
Every employer must provide suitable head protection for each employee and shall maintain it and replace it whenever necessary. A similar duty is placed on self-employed people. The employer must make an assessment and review it as necessary, to determine whether the head protection is suitable. Accommodation must be provided for head protection when it is not in use.
Every employer shall ensure, so far as is reasonably practicable, that each employee (and any other person over whom they have control) at work wears suitable head protection, unless there is no foreseeable risk of injury to their head other than through falling.
The person in control of a site may make rules regulating the wearing of suitable head protection. These must be in writing. An employer may give directions requiring their employees to wear head protection.
Every employee who has been provided with suitable head protection shall wear it when required to do so by rules made or directions given under Regulation 5 of these Regulations. They must make full and proper use of it and return it to the accommodation.
Employees must take reasonable care of head...