Cika wannan jumla: Gajiya saboda aikin sauye-sauye ya ba da gudummawa ga bala'o'i na masana'antu da dama, ciki har da
Hatsarin tsibirin Three Mile, bala'in jirgin saman Challenger da kuma bala'in Chernobyl. Rahoton karshe na Hukumar Ruwan Man Fetur ta Alaska game da bala'in zubar da man fetur na "Exxon Valdez" ya gano cewa "yana yiwuwa" cewa yawan lokutan aiki ya ba da gudummawa ga gajiyawar ma'aikatan, wanda hakan ya ba da gudummawa ga jirgin ruwan da ke gudana.