Ensuring businesses work together for the health and safety of everyone in the workplace is a fundamental part of HSWA's design.

Overlapping duties - quick guide

Businesses that work together will likely share health and safety duties in relation to the same matter. These are known as overlapping duties.

PCBUs working together: advice when contracting 

Health and safety obligations can overlap in a contracting chain, where contractors and subcontractors provide services to a lead contractor or client. These guidelines are for persons conducting a business or undertaking (PCBUs) who are sharing a workplace with other businesses, or are working as part of a contracting chain.