Skin cancer is the most common type of cancer, and it’s also one of the most preventable. Help employees protect themselves from the harmful effects of the sun and excessive UV exposure by providing information and changing work conditions (such as scheduling and providing protective equipment). Working outdoors puts you at a higher risk of developing skin cancer because you are regularly exposed to the sun for long periods of time. Outdoor workers are often in the sun when the ultraviolet (UV) radiation is strongest: between 11 am and 3 pm, when the UV Index is 3 or higher, and often between April and September. The following sections can help you make your workplace sun safe for all your employees, especially those who work outdoors.