Taxes and labour supply: more evidence, by Chris Dillow: Do tax cuts boost labour supply and hence tax revenues? Here’s some evidence that they don’t. Pierre Cahuc and Stephane Carcillo report on an experiment in France:
The detaxation of overtime hours introduced in October 2007 was intended to allow individuals in France to work more so as to earn more. The evaluation conducted in this article indicates that the detaxation of overtime hours has not, in fact, had any significant impact on hours worked…
Detaxation is a measure costly for the public purse, without any ascertained impact on hours worked.
Now, this is not to deny that Laffer curves exist. No doubt, there is a point at which higher taxes would be counter-productive and tax cuts would pay for themselves. ... But where is the hard evidence that, at tax rates around current levels, there are such effects? Do the glibertarians have anything more than prejudice, half a theory, and the post hoc ergo propter hoc fallacy?