Definition of Date of Injury
Date of injury in a workers' compensation claim is the date that you were injured. For example, you were hit by an object while you were working for your employer on Thursday, May 23, 2013. Thursday, May 23, 2013 is the date of your injury.
However, when your injury is a cumulative injury that is brought about by repeated exposures or events, the date of injury is not as simple.
For example, on March 1, 2012 you go to your company's medical department complaining of bilateral wrist pain. Your job involves repetitive motion. Your are given first aid treatment and go back to work. However, as time goes by your symptoms remain and get worse. On March 1, 2013 you see a doctor and are diagnosed with bilateral carpal tunnel syndrome and receive medical treatment for the condition. In May, 2013 you have to have surgery and miss several days of work. Is your date of injury, March 1, 2012 or March 1, 2013? According to the Occupational Safety & Health Administration (OSHA), the date of injury is March 1, 2013 because you had not previously experienced a recorded injury or illness of the same type that affected the same part of your body.