In May 1930, Labour MP Oswald Mosley left the party after its rejection of his proposals for solving the unemployment problem, and Attlee was given Mosley's post of Chancellor of the Duchy of Lancaster. In March 1931, he became Postmaster General, a post he held for five months until August, when the Labour government fell, after failing to agree on how to tackle the financial crisis of the Great Depression.
In May 1930, Oswald Mosley left the Labour Party after it rejected his ideas for solving unemployment. Attlee then took over Mosley's position as Chancellor of the Duchy of Lancaster. In March 1931, he became Postmaster General, a role he held until August when the Labour government collapsed due to its inability to address the Great Depression's financial crisis.