Efficiency in the labour market is usually accounted for in order to understand and assess earning gaps that prevail among males and females. Arguing that the individuals? skills, productivity, and commitment to work ultimately determine their incomes sounds too na?ve to explain the earnings? differential between males and females. In fact, discrimination against females may occur at different stages of their career path. The wage gap is apparent at the top (glass ceiling) as well as at the bottom (sticky floors) of wage distribution. This paper intends to explore earning gaps as a function of the characteristics of existing Lebanese human capital and labour productivity in selected white collar jobs within a large institution of the service industry. Quantitative analysis using linear regression is conducted. Outcomes of the research are expected to lead to the exploration and the explanation of the impact of automatic stabilizers on the Lebanese labour market in reducing gender disparity, and hence to discuss the government?s intervention practices. Key Words: Gender wage gap, Lebanon, Lebanese labour.