On this page by the Canadian Centre for Occupational Health and Safety, you can find information on what fatigue is, its causes, symptoms and impacts. It also touches upon the role of workplaces in fatigue.
This webpage by Health and Safety Executive UK highlights the significance of fatigue in workplace safety, particularly for shift workers who may experience reduced performance due to prolonged exertion or inadequate rest. You also find some helpful resources to manage fatigue risks and shift work,
Practical guidance by Safe Work Australia for persons conducting a business or undertaking on how to manage fatigue to ensure it does not contribute to health and safety risks in the workplace.