Hazards of exposure to UV light

       There are many hazards associated with the human body's exposure to ultraviolet light. These rays are a part of sunlight that is a form of radiation but is invisible to the human eye. These rays can penetrate skin cells and charge their structure.  There are three types of ultraviolet radiation. The three types of ultraviolet radiation are ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC). The most abundant form of these on the surface of the earth is ultraviolet A (UVA). This form of ultraviolet radiation can penetrate the top layer of the human skin and do serious harm to the human body.  Scientists believe that this type of radiation can cause damage to connective tissues and even can be a cause of skin cancer.  Ultraviolet B cays generally don't penetrate as deep into the skin as ultraviolet A rays but can still cause skin cancer. Ultraviolet C rays don't pose as much of a risk to workers because most are absorbed by the earths atmosphere. Exposure to these harmful rays is the highest during the summer and between the times of 10:00 AM and 4:00 PM. If you are working outdoors during these times your risk of getting sunburned is increased. Some substances that reflect UV light and also increase your chances of getting sunburned are snow and light colored sand. Even on cloudy days workers are still at risk from uv light and can still get sunburned. Some drugs that you take can even increase your sensitivity to sunlight and chances of getting sunburned. The most common of these drugs would be ibuprofen. Some professions have an increased risk from UV damage in the workplace. Some of these professions include life guards, construction workers, agricultural workers, landscapers and gardeners. Overall to prevent the development of sunburn and skin cancer it is recommended to take promotions when working outside during the summer months.

Center for disease control and prevention
Brown University

The first picture is of a common sunburn that is caused by overexposure to ultraviolet radiation and the second is a malignant mole that is a sign of skin cancer most likely caused by ultraviolet radiation.