How might work levels among low-income men be raised, as they were for welfare mothers in the 1990s? This study expands the relevant literature on both social policy and implementation. Low-skilled men owing child support and ex-offenders returning from prison are already supposed to work but often fail to do so. The reasons include both the recent fall in unskilled wages and the confusion of men's lives. Existing work programs in child support and criminal justice appear promising, although evaluations are limited. A survey covering most states shows that half or more already have some men's work programs, usually on a small scale. Field research in six states suggests the political and administrative factors that shape wider implementation of these programs. Work programs should preferably be mandatory, stress work over training, and be combined with improved wage subsidies. The federal government should provide more funding and evaluations.