After the Dissolution of the Soviet Union in 1989, There was a large immigration of Soviet Jews to Israel. Over the following ten years, Israel absorbed approximately 900,000 immigrants from the former Soviet Union, an amount was equivalent to around one fifth of the Israeli population. The majority of these new immigrants of working age had a college education and were very experienced. As they arrived in Israel, they got a lot of benefits, including, Hebrew language training, housing subsidies, and professional education. It propose a natural experiment for testing the consequences of a large immigration inflow of skilled workers This book provides a detailed analysis of the gradual process of occupational upgrading of immigrants and the attributed rise in their wages.