Active labour market policies (ALMPs) are government programmes that intervene in the labour market to help the unemployed find work. Many of these programmes grew out of earlier public works projects, in the United States particularly those implemented under the New Deal, designed to combat widespread unemployment in the developed world during the interwar period. Today, academic analysis of ALMPs is associated with economists such as Lars Calmfors and Richard Layard. Demand-side policies are policies used by the government to control the level of Aggregate demand (AD).