The scope of the paper refers to long- and medium-run trends of labour supply in Poland. The main purpose is to determine current trends in the labour supply and its projections till the year 2050. In the theoretical part of the paper determinants of labour supply are considered. The projections are based on the population forecasts till 2050 made by the Central Statistical Office of Poland (CSO) and by the authors’ own simulations. Several variants of upper limit of working age and activity rates are taken into account. The population forecasts by the CSO indicate it will occur big decrease of working age population till 2050. The biggest decrease will refer to the group of working age 18–59/64 years and the lowest decrease in the age group 18–66 years. The analysis shows that the declines in labour supply in the years 2020–2050 will occur in all variants of working age population, the biggest decline in the variant assuming the age group 18–59/64 and the smallest decline – in the group 15–74 years. Retirement age is of big importance for the size of labour supply. This is why it is recommended to encourage older people to prolong their economic activity. It is also necessary to increase activity rates in the working age population.

The article examines the trends in the development of renewable energy in Ukraine in accordance

with the long-term strategy of the energy sector of the state in the context of the transformation

of employment in the energy sector of the country. It is emphasized that investments in renewable

energy technologies create more jobs compared to traditional electricity generation technologies.

It is defined that in Ukraine there is a significant untapped potential for energy efficiency, which

requires accelerating the pace of modernization and development of renewable energy sources and

raises the issue of labor supply to the industry. It was emphasized that there are a number of opportunities

for the development of the energy sector of Ukraine related to the development of renewable

energy sources. It is underlined that the formation of territorial-industrial clusters in Ukraine

for the production of equipment for solar and wind energy with a closed production cycle forms

long-term prerequisites for socio-economic stability in the country and stimulates employment. It is

substantiated that an important reserve for increasing employment in Ukraine is to ensure the energy

efficiency of buildings. At the same time, it was noted that in the field of renewable energy and

energy efficiency in Ukraine there is a significant shortage of qualified technicians and specialists

in the field of innovative technologies, which confirms the importance of studying the problem of

labor support in the industry. It is determined that today the solution of the issue of labor supply

of the industry takes place mainly at the level of enterprises that invest in the development of their

own staff.