Standardization of labor has an important place in improving the efficiency of production, growth of labor productivity, fair assessment of the contribution of each in the results of common labor, the implementation of the socialist principle of distribution of labor.

The dependence of stock return on the duration of operation of mining enterprises is not sufficiently investigated. Determining it would allow more reasonable planning of stock return, taking into account the age characteristics of enterprises, and the availability of quantitative estimates that characterize the relationship “stock return - age of the enterprise”, would contribute to improving the level of sectoral forecasting of stock return ...