A new deliverable has been published, which explains the role of flexible wage components in gender wage differences. According to the report, a main driver of the gender gap wage gap is the fact that women have a lower chance to enter high- paying firms. Also, even upon entering, they receive a lower share of the firm-specific wage premium than their male co-workers. In this report Hungarian linked employer-employee dataset and AKM decomposition are used to show that performance and overtime payments are main drivers of these gender differences in firm premia. One fifth of the total gender wage gap can be attributed to the fact that women receive a lower share of the firm specific wage premium at firms with overtime and performance payments. At the same time, labor productivity or firm size has a negligible effect on the gender difference in firm-specific wage premium conditional on the wage structure.