The Northern zone consists of four regions namely; Arusha, Kilimanjaro, Manyara and Tanga. Its main offices are located in Arusha along Uhuru Road/Metropol area and the sub-office is in Tanga region. The unique feature of this zone is the pre-dominance of tourism based activities,as there are many popular tourist attractions such as Tarangire, Ngorogoro and Serengeti National Parks to mention a few. OSHA plays an important role in ensuring the safety and health of workers and other people involved in the tourism sector and other economic activities in this zone.