The Heat Worker Safety ordinance was created to help ensure that more workers in the City of Phoenix are protected from extreme heat. The City recognizes that extreme heat is a serious public health threat in our region and is pursuing a wide range of strategies to prevent heat-related illnesses, especially among highly exposed and vulnerable populations. This new ordinance includes contractor requirements to have a written heat safety plan on file that contains specific criteria. This new requirement applies to all contracts, licenses, and leases between the City and the contractor, licensee, lessee and contracts between the contractor and its subcontractors, sublicensees, and sublessees with workers that perform work in an outdoor environment.