France has recently implemented the second phase of its transition to a 35 hours working week, making it obligatory for medium and small businesses. It is considered by many economist to be a wasteful measure, based on the "lump of labour" fallacy.
IIIg. Administrative Measures: Public Works
The Civilian Conservation Corps (CCC) was established in the USA in 1932. It offered work for young and unmarried men. They planted trees, erected flood barriers, put out forest fires, and constructed forest roads and trails. They lived in semi-military work camps, were provided with food rations and a modest monthly cash allowance, medical care, and other necessities.
At its apex, the CCC employed 500,000 people - and 3 million people throughout its existence. It was part of a major "public works" drive known as "The New Deal". This Keynesian tradition continues in many countries - from deflationary Japan to racially imbalanced South Africa - to this very day. Such workers are usually paid a salary equal to their unemployment benefits (Workfare).
The Encyclopedia Britannica has this to say about public works:
"The weakness in the proposal to use disguised unemployment for the construction of social overhead capital projects arises from inadequate consideration of the problem of providing necessary subsistence funds to maintain the workers during the long waiting period before the projects yield consumable output. This can be managed somehow for small-scale local community projects when workers are maintained in situ by their relatives - but not when workers move away. The only way to raise subsistence funds is to encourage voluntary savings and expansion of marketable surplus of food purchased with these savings."
Public works financed by grants or soft loans do serve as an interim "unemployment sink" - a countercyclical buffer against wild upswings in unemployment - but, for all we know, they may simply be displacing existing employment at great cost to the public purse.