This article analyzes the impact of immigrants' educational attainment on employment in agricultural, industrial, and services sectors. The research compares data of OECD-20 countries in the period of 1980–2010. The goal of the paper is to analyze the theoretical interpretations of immigration and employment; to measure the impact of immigrants' educational attainment on employment by carrying out an empirical research in selected countries. Empirical analysis has been performed using the methods of descriptive statistics, correlation, regression analysis and System Generalized Method of Moments (GMMs). The results of the empirical research regarding the impact showed that high-skilled immigration has a positive and statistically significant impact on employment in industrial and services sectors, but the impact on employment in the agricultural sector is statistically insignificant. Medium-skilled immigration has a positive and statistically significant effect on employment in all three sectors. However, low-skilled immigration has no effect on employment in either agricultural, industrial or services sectors.