Washington’s Department of Labor and Industries has created a worksheet based upon the NIOSH Lifting Equation to determine if a lift operation exceeds the recommended limits. A copy of this worksheet can be found here: (Worksheet: Lifting Limit Exceedance (50)). If you are unfamiliar with the NIOSH Lifting Equation, a good resource is the Revised NIOSH Lifting Equation Document.
LI = the relative estimate of the physical stress associated with a manual lifting job
Sources: eLCOSH & NIOSH
