Researchers evaluated work-related injuries involving a hand or fingers and associated costs among a cohort of 24,830 union carpenters in the state of Washington between 1989 and 2008. Hand injuries accounted for 21.1% of reported injuries and 9.5% of paid lost-time injuries. Older carpenters had proportionately more amputations, fractures, and multiple injuries, but their rates of these more severe injuries were not higher. Costs exceeded $21 million, a cost burden of $0.11 per hour worked. Older carpenters' higher proportion of serious injuries in the absence of higher rates likely reflects age-related reporting differences, according to researcher.