The 'six-pack' is the name given to the half-dozen most widely quoted sets of health and safety regulations. They came into effect in Britain after six European directives, collectively known as the 'six-pack', were issued by the European Commission.
The main set of regulations is the Management of Health and Safety at Work Regulations 1999, also known as the 'Management Regs'. They place a legal duty on employers to carry out a risk assessment as a first step in ensuring a safe workplace, and lie at the heart of the modern approach to health and safety at work.
Other 'six-pack' regulations cover heating, lighting and ventilation at work, the safe use of computer screens and keyboards, handling heavy or awkward loads, rest breaks, and personal protective equipment.
Details on the six-pack of regulations can be found on the Health and Safety Executive (HSE) website.