(1) theory of subsistence wage: this theory holds that in industrialized society, workers' wages tend to the level of subsistence in the long-term fluctuation of economy, so wages are "the natural price of labor". The natural price of this subsistence wage is the basic reproduction cost of human resources, which is equivalent to the minimum wage in the field of wages and salaries.

(2) wage fund theory: this theory holds that wages are a part of capital, which includes depreciation of fixed capital, expanded reproduction investment, management expenses and wages. The total capital is a fixed amount, and the total wages also have a certain fixed share, so it is called wage fund. The wages received by workers are limited by wage funds, and the level of individual wages depends on the ratio between the number of wage funds and the population.

(3) Benefit-sharing theory: It means that employees' wages are not fixed according to working hours, but share the benefits of enterprise operation with employers, that is, employees' wages account for a certain proportion of enterprise operating income. Martin Weizmann, an American economist, advocates that employees' compensation should adopt two modes: wage system and benefit sharing system, that is, to link employees' interests with the operating efficiency of enterprises. For example, the current marketing industry is such a situation, and the salary of most salespeople is linked to the amount of business they have completed, that is, the theory of benefit sharing.