The total annual revenue divided by the total number in the workforce gives a rough estimate of the productivity of a firm. Which of these arguments illustrate a serious weakness of this measure when used to compare the internal performance of the firm from one time period to another?
1. as we increase the workforce, the resulting organizational problems reduce worker efficiency
2. increased investment in technology allows workers to increase their output
3. as the price of the output goes up, the revenues go up
4. as employees work more efficiently, the revenue per employee goes up