The first step is to gather the needed information and measurements for lifting task variables, and record the data to be used later to calculate the RWL and LI for the tasks being evaluated. The evaluator should prepare by interviewing and observing workers to gain a complete understanding of all required lifting tasks. Selection of the lifting tasks to be evaluated should be based on the most significant and demanding manual material handling tasks. If the job requires a wide variety of lifting tasks, a multi-task evaluation can be performed using a composite of all single-task lifting assessments performed. More on that later, but for now let’s focus on single-task assessments.
For each lifting task analyzed, the evaluator will need to determine the task variables as outlined above. We have developed the following worksheet to assist you with data collection