Consider an employee who works at the big-box store stocking shelves overnight while the store is closed. The employee begins to experience some mild to moderate low-back pain from the lifting of the boxes. The boxes vary in size and weight. Use calculations to determine the recommended weight limit (RWL) and lifting index (LI) for this employee. The average weight of the boxes is 40 lbs and the average size is a standard banker's box. What recommendations could be made based on the findings of your calculations? Show the calculations.