energies Article Study on Companies from the Energy Sector from the Perspective of Performance through the Operating Cash Flow 1 1 1, 2 Claudia Diana Sabău-Popa , Luminit, a Rus , Dana Simona Gherai *, Codrut, a Mare 1 and Ioan Gheorghe T, ara 1 Department of Finance—Accounting, Faculty of Economic Sciences, University of Oradea, 410087 Oradea, Romania;
[email protected] (C.D.S.-P.);
[email protected] (L.R.);
[email protected] (I.G.T, .) 2 Department of Statistics-Forecasts-Mathematics, Faculty of Economics and Business Administration, Babes-Bolyai University, 400000 Cluj-Napoca, Romania;
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[email protected] Abstract: In this paper we analyzed the link between companies’ performance, in terms of cash and income, and the labor productivity or management rates, in case of the companies from the energy sector listed on the Bucharest Stock Exchange. We focused on the energy sector because of the impact that its expansion has on the evolution of economies around the world and because of its dynamics in the sense of gradually shifting to the use of energy from renewable sources. We have used panel regression models to analyze the operating cash flow and the profitability rates and the determination of a causal or dependency relationship with labor productivity or management rates. The results of this study show a significant negative correlation between operating cash flows and the average duration of stock rotation, and no correlation between productivity and the operating cash flow. Instead, the average duration of stock turnover does not at all influence the profitability Citation: Sab˘au-Popa,C.D.; Rus, L.; rates, and productivity is always significant for the return on assets, ie forthe return on equitywith Gherai, D.S.; Mare, C.; T, ara, I.G.