Drawing on ethnographic research in a homeless shelter, this article examines how caseworkers navigate an occupation that is often physically and morally trying, and at times, objectionable. Given this context, we examine the ways in which caseworkers identify and define "dirty work," often seen as a source of occupational degradation, according to two main typifications: the physical and the moral. Building on Erving Goffman's frame analysis, we examine the definitional and interactional strategies actors use to transform unpleasant first-order realities to more valued, meaningful, or workable second order realities, by keying particular frames of meaning. These involve framing dirty work through (1) a professional lens, (2) humanism and egalitarianism, (3) a negotiated interpretation of institutional rules, and (4) the use of humor. We conclude by reflecting on the constructed nature of dirty work, and the importance of framing strategies in the sociology of occupations, suggesting that a more generic application of these ideas may be useful across a number of other social contexts.