This article examines the patterns of enterprise development that underlie the evolution of the Moldovan economy over the period 2010-2019 (10 years). The issues of personnel involvement in the economy and labor productivity, profit and profitability of enterprises from the point of view of their classification by dimension class: large, medium, small and micro-enterprises are considered. Attempts was made for identify the regularity between the economic growth of the country and the size of the enterprise carrying out financial and economic activities. The conclusions obtained in the framework of this study allow us to conclude the level of economic development and the prospects for its further growth, including through government intervention to support a particular category of enterprises.

The article deals with the formation and processing of construction waste resulting from the activities of construction organizations. Every year there is a growth in the volume of construction products, which leads, among other things, to an increase in the volume of generated waste. The aim of this scientific research is to study the preconditions of sustainable development of construction enterprises in the Republic of Moldova in the context of waste management. As a hypothesis, it was assumed that the scale of formation and processing of construction waste affects the profitability of contractors. The initial information for the research was the data characterizing the activity of the construction enterprises of the Republic of Moldova for the last 6 years. Methods of economic analysis and methods of correlation regression were used as research methods. The results of the correlation analysis showed that 99.27% of the profitability of sales of construction enterprises depends on the factors reflecting different aspects of waste formation and management, which makes it possible to directly create prerequisites for long-term and efficient management of construction waste.

The article presents a critical analysis of the expediency of discounting in the evaluation of long-term investment projects. Discounted cash flow is a common method of valuing investments that produce cash flows. Discounting the projected cash flows generated by an investment project during its operational stage is one of the basic evaluative principles of investment analysis. Evaluation of projects using discounting methods is a priori considered more objective since the influence of the time factor is taken into account when calculating integral indicators. The critical analysis carried out by the authors allows us to state the need for the selective use of discounting in investment analysis. The authors emphasize the fact of unjustified ignoring of static methods which do not involve discounting of certain cash flows elements within justifying the effectiveness of projects. The necessity of expanding the application of static evaluation methods in order to prevent the negative impact of the phenomenon of "investment myopia" is substantiated.

The serious economic consequences of the COVD 19 pandemic are reflected in all activities of the national economy of the Republic of Moldova, including construction. In 2020, the activity of construction enterprises is characterized by a slowdown in the growth rate of sales revenues, a reduction in net profits, and a decrease in the average number of employees. Reaching the level of key economic indicators achieved by construction enterprises before the pandemic requires time and significant production stimulation. The key factor for the long-term development of enterprises is still the personnel and its productivity. The article assesses the use of personnel of construction enterprises for the period 2015-2020, including the period of restrictive measures during the first wave of COVD 19. Various quantitative and qualitative aspects of personnel use are considered: personnel mobility, personnel training, working conditions and remuneration, and labor productivity. A multifactor correlation model was elaborated, which allows for a comprehensive approach to the study of personnel productivity by including a wide range of economic indicators of personnel utilization in the regression equation. Measuring the degree of correlation between the effect of the time factor on the economic indicators included in the model allowed to reasonably forecast the expected level of labor productivity in the short term. The increase in labor productivity in 2022 can be 15% compared to the level of the indicator in 2020. The use of the obtained correlation model, covering comprehensively various aspects of the use of enterprise personnel, allows to simulate the desired level of labor productivity, which ensures the reduction of the recovery period of construction enterprises after the pandemic. The practical application of the model is recommended to the interested persons, managing construction enterprises.