2 EE WERE CUTTING GRATING TO BE INSTALLED. EE WAS IN THE PROCESS OF REPOSITONING A SAWHORSE WHICH SUPPORTED THE GRATING. GRATING WAS SUPPORTED AT THIS TIME BY FORKLIFT. WHEN EE PULLED ON THE S AWHORSE TO REPOSITION HE FELT A PULL IN THE LOWEBACK AND ALSO PAIN DOWN THE LEFT LEG. EE WAS PLACED ON A WEIGHT LIFTING RESTRICTION.