As virtually everyone is exposed to the sun on a daily basis, ultraviolet (UV) radiation is an important environmental health hazard. Additionally, there are many occupations that receive substantial exposures to either natural UV or UV from artificial sources. Even though the adverse effects of UV exposure have been well known for some time, there is still much that we don't know about occupational UV exposure. In the occupational setting, managing the risk of occupational UV exposure is particularly challenging. This plenary will discuss the current state of knowledge and some key risk management challenges relating to occupational exposure to UV.