Konsekwencje przemian demograficznych w świetle adekwatności i stabilności systemów emerytalnych

The challenges posed by demographic changes such as increase of old-age dependency ratio and change of the proportion between working and retirement period can affect the stability of pension systems. The aim of this paper is to present: 1. The impact of population ageing on stability and sustainability of pension system in Poland, 2. The impact of pensions reforms conducted over the last twenty years on stability and sustainability of pension systems in Poland and other European countries.