 Finally, and arguably most problematic, associating fair pay with workers’ marginal productivity means giving different workers different pay for the same work. Decreasing marginal productivity means that the productivity associated with each additional laborer decreases as more workers are added. Early hires will be associated with greater marginal productivity than those who join later, even if they all perform identical tasks. This also means that if an ‘early’ employee quits, the nonexploitative wage of an employee hired later increases (because their marginal contribution has increased). Thus, the neoclassical account cannot satisfy the intuition that fair employment requires equal remuneration for equal work. This problem can be avoided by modifying the neoclassical account so that exploitation consists in paying labour less than its average product. Yet the average product approach still cannot accurately track the contributions to output of individual workers if some are more productive than others.