The following articles by myself and by Andrei Markevich are the first in a series of four analysing income-earning strategies of urban households in twentieth-century Russia and the Soviet Union. The articles deal with a similar set of issues for four subsequent periods. In this issue of Continuity and Change my article covers the early Soviet period from the revolution of 1917 to the start of the Second World War and Andrei Markevich focuses on the war, the post-war Stalin period and the Khruschev years, taking his analysis into the latter half of the 1960s. In the next issue, Victoria Tyazhelnikova will examine the Brezhnev period and Sergei Afontsev the years of reform under Gorbachev and in post-Soviet Russia.