If a company invests in production improvement option D that will boost labor productivity by 50%, while its annual depreciation costs will rise by an amount equal to 10% of the investment costs associated with installing option D, it is accurate to say that its labor costs per pair produced will decline at whichever company production facility that has the lowest level of labor productivity. from $5.71 per pair to $3.81 for a production facility in Latin America that currently has labor productivity of 3,500 pairs per worker and total regular compensation (which does not include overtime pay) of $20,000 annually. by a greater amount per pair produced at a production facility with 6 million pairs of capacity that at a facility with 3 million pairs of capacity. from $9.00 per pair to $4.50 for a production facility in North America that currently has labor productivity of 5,000 pairs per worker and total regular compensation (which does not include overtime pay) of $45,000 annually. by the greatest amount per pair produced at the company's production facility having the lowest level of total regular compensation (which does not include the use of overtime)