The growing role of sustainable development and, above all, its ecological aspect, in the development of modern company competitive edge leads to the popularization of the question of incorporating environmental practices into the area of human resource policy, referred to as Green HRM. The objective of the research was to identify pro-environmental HR practices embraced by young Polish enterprises and to prioritize them in accordance with their effect on company sustainable development. To attain these goals, a survey was conducted among a random, representative population of 150 young enterprises. The study revealed that the Green HRM concept in the Polish reality is relatively. However, there is a strong positive correlation between the evaluation of the impact of individual activities within Green HRM on sustainable company development and their practical implementation. Research demonstrated that the higher the evaluation of the impact of a given activity, the more frequent its implementation in the studied companies. This allowed the formulation of the following conclusion: in order to increase the scope of the implementation of the Green HRM concept in Polish young enterprises, it is necessary to raise awareness and disseminate knowledge concerning the impact Green HRM can have on sustainable development in organizations.