One of the extraordinary things that arose in a recent discussion about whether employment guarantees are better than leaving workers unemployed was the assumption that the costs of unemployment are relatively low compared to having workers engaged in activities of varying degrees of productivity. Some of the discussion suggested that there were “microeconomic” costs involved in having to manage employment guarantee programs (bureaucracy, supervision, etc) which would negate the value of any such program. The implicit assumption was that the unemployed will generate zero productivity if they are engaged in employment programs. There has been a long debate in the economics about the relative costs of microeconomic inefficiency compared to macroeconomic inefficiency. The simple fact is that the losses arising from unemployment dwarfed by a considerable margin any microeconomic losses that might arise from inefficient use of resources. in this blog, I discuss some of those issues.