Marginal revenue productivity theory of wages
（重定向自Marginal Productivity Theory）
The marginal revenue productivity theory of wages is a theory in neoclassical economics stating that wages are paid at a level equal to the marginal revenue product of labor, MRP (the value of the marginal product of labor), which is the increment to revenues caused by the increment to output produced by the last laborer employed. This is because no firm would employ additional labor whose cost would exceed the revenue generated for the firm.