People like to compare what Krugman writes today in his political hack era with what he wrote in his real economist era. But this time I do not have to look that far back.
On February 5 and On February 6, Krugman essentially agrees with the OMB review of Obamacare effects on employment, saying that the health care subsidies for lower-income workers would cause millions to work less by reducing the incentive to work, which he called "a good thing." More here.
On February 9, Krugman returns to a theme he has been hitting on for some weeks now, calling the Republicans anti-science, mean-spririted, etc. for actually believing that unemployment benefits might reduce employment by reducing the incentive to work. And here is what he wrote on the topic on December 8:
The view of most labor economists now is that unemployment benefits have only a modest negative effect on job search — and in today’s economy have no negative effect at all on overall employment. On the contrary, unemployment benefits help create jobs, and cutting those benefits would depress the economy as a whole.
Yes I understand the shape of the subsidy patterns with income are different, but good God man you cannot reasonably argue that the labor supply curve is sensitive to means-tested government subsidies for one program but not at all for another without a heroic analysis that I cannot imagine and Krugman has not supplied.