Check out this article from the Aniston Army Depot Industrial Hygiene Department.

https://www.army.mil/article/201836/is_your_workplace_stacked_against_you_ergonomics_can_help

The ART tool was designed by the Health and Safety Executive of the British government. They are our equivalent of OSHA. This is a free tool that can help you in assessing risks to employees that involve repetitive movement tasks of the upper extremity. They have free downloads of the ART tool Read more