Looking for back stretches/exercises that Maintenance employees can do at work

I am trying to locate some good stretches specific to the back that employees could easily do in the workplace.  I already have some for folks to do lying on a mat on their back, and am looking for some more practical ones.  Please email me directly at christine@cihergo.com if you have this info in a ppt. presentation of pdf file.  Thanks alot!

regards,

Christine Pomerenke, CIH, CEES

CIH Ergonomics LLC

www.cihergo.com