The aim of the study is to describe the regulations contained in the Public Procurement Law, which can guarantee employment of people previously employed in the mining sector, and who will lose their jobs as a result of the energy transformation being carried out in European Union countries. The study will outline the main assumptions of the Green Deal, the phenomenon of Just Transition, information on employment in the mining sector in Poland, the genesis of sustainable public procurement, the characteristics of pro-social instruments in procurement. This should lead to the verification of the hypothesis according to which social public procurement can be an instrument to activate a group of miners who, after the energy transformation, will become a disadvantaged group in the labour market, within the meaning of the definitions of severely disadvantaged worker and disadvantaged worker contained in the Commission Regulation (EU) known as the General Block Exemption Regulation.