Permit to work
A formal system requiring written authorisation before certain high-risk activities are carried out, ensuring controls are in place and relevant parties are informed. Widely used across all three frameworks, often as guidance or good practice rather than a single statutory duty.
Also known as
By jurisdiction
UK HSE
“permit to work”PTWSharedUsed across many high-hazard industries under COSHH, DSEAR, the Confined Spaces Regulations and offshore safety regulations. HSE defines permit to work as a formal documented safety procedure. It is not mandated by a single general permit-to-work regulation.
Irish HSA
“permit to work”PTWSharedUsed as a recognised control measure in Irish construction, chemical and maintenance work. The Chemical Agents Regulations and construction regulations reference permit-to-work systems in specific hazard contexts.
US OSHA
“permit to work”SharedOSHA 29 CFR 1910.146 requires a permit system for permit-required confined space entry. 29 CFR 1910.119 (PSM) requires hot work permits. Outside these applications, OSHA does not mandate a universal permit-to-work system.
Practitioner note: A documented safe system of work for high-risk tasks. The permit sets out who is authorised, what precautions must be in place, and the time limit for the work.