There are many causes of WMSDs, and to prevent them, the whole work situation must be taken into consideration; it is therefore a difficult issue to handle. First, it is important to understand what is going on, to get rid of any biases, to find out the facts. Then, it is necessary to address and evaluate the seriousness of the situation prevailing in the workplace. If the situation is acceptable, it may be sufficient to simply remain alert and ready to intervene at the slightest sign of deterioration. If, however, it becomes obvious that the situation is problematic, either because there are already signs of identified. This project demonstrates that there is ample room for ergonomic improvements in the lock industry. We need to continue to identify problems and, more importantly, implement solutions to reduce the risk of injuries in situations where we know problems exist.