&gt;&gt;The best past experiment, in the Canadian town of Dauphin in the 1970s, was considered promising because it suggested the policy didn&#x27;t discourage people from working much; only teenagers and new moms (two groups who might be better off not working anyway) reported working less.<p>Typically, both of those groups are low-income, and therefore wouldn&#x27;t be contributing that much to tax anyway.  Its precisely the idea that taxpayers will decide not to work which is driving these studies.