Some injuries are obvious and clearly connected to your work. If you lose a hand to a machine you were asked to use as part of your job, no one will question the connection to your work.nnUnfortunately, not all injuries are so evident, but they still deserve to be compensated for. The above case is an example of a specific injury connected directly to an event or incident. But there is another kind: cumulative trauma injuries.nnCumulative trauma injuries are those that are caused by ongoing stresses, repeated motions, or long-term exposure to certain chemicals. These can be very serious and disabling injuries that are connected to your work but not to any specific instance. A typist develops carpal tunnel syndrome not because of a single fateful keystroke but after millions of them year after year.nnSometimes, these will even stretch over a time period with multiple different employers, of whom only those from the last 12 months of exposure need to be filed against.