My master thesis compares the impact of different life-courses on the Gender Pension Gaps across East and West Germany, Czechia and Italy. Using retrospective data on the dimensions of work and family from SHARELIFE, I contrast two different approaches. The first applies sequence data analysis to identify work-family life course patterns across all four countries as a first step, and includes these life course categories as determinants in a Blinder-Oaxaca-Decomposition of the Gender Pension Gaps. For the second approach, I include the life course variables for work and family indicators separately in the decomposition analysis. My initial results show clear differences in the share of the gap explained by differences in life courses between men and women across countries, highlighting the impact of the different pension systems in the countries. The results differ further across both modelling approaches, revealing the different benefits of both.