When machinery is not in use, it should always be turned off. If industrial sewing machines have been left turned on, you can still hear the engine running which is a signal to turn it off, lift the press foot, and press the treadle till the energy has run out.
Here is an example of someones fingers getting too close to the machine. These sewing machines are industrial standard, and injury can easily happen. To help prevent this, care should be taken when sewing, and fingers kept a safe distance from the needle at all times
Loose hair is a health and safety issue as it could could caught in the machine, and cause serious injury. To prevent this, medium to long hair should be tied back.
Pins are easily strune around and dropped on the floor. It is important to be carefull and try to pick up as many as possible as they are dangerous when left on the floor.