If the area is poorly lit, the chance of an accident happening is greatly increased. Never attempt to change blades or bits on a tool that's connected to power. Pull the plug or turn of the circuit breaker. Do not work when you are tired or taking medication. Keep blades and bits sharp.
Dull tools can cause an accident.
These are a few safety rules that everyone should follow. But, above all else, use common sense. Find another way to accomplish the task that's safe. I am going to start a new series over the next few newsletters about wood joints. I hope it will be useful and informative.