When I link these two it is with the frame of mind that achieving quality does rely on human performance as well as a sound process. Industrial Hygiene is a science that specifically addresses the links between wellness and productivity. Do some research into that and you may find examples of what you can approach in your facility.
A person who is feeling ill or even "a bit off" from noxious vapors or chemical irritants will almost certainly not be perfectly attending his or her task. Errors can result. This is also true in services, which is why I urge all root cause investigations to specifically include an
environment factor. Everything that makes us sick or uncomfortable can impact our quality of work, including simple heat and cold.
Similarly, a person who is operating a machine he or she knows is unsafe may not be handling matters or materials in an appropriate fashion for the process, to protect themselves from harm.
Adequate lighting is a simple, yet commonly overlooked problem. General Electric (GE) did an internal study and found adequate lighting is an issue that affects both safety and product quality. When I have more time I can find their report for you. Until then, read about the issue in general here:
http://www.smartoffice.com/go4.htm
http://www.nlb.org/pubs/case_lighten.html
Be well!
