Drawing on ethnographic data from the sanitation industry in Wenzhou and Guangzhou, we investigate different patterns of work organization in each city. We find that supplementary informal work can serve to subsidize low family income and therefore stabilize formal but exploitative work. In Wenzhou, the family team model creates time and space for one spouse to engage in informal work while still receiving a wage from the employer. This additional informal work significantly increases net family income, which neutralizes worker demands for better wages and working conditions in the formal sector. In contrast, Guangzhou workers are subject to relatively rigid spatio-temporal controls, impeding them from participating in informal work to supplement their formal wages. Despite receiving higher wages and more benefits, these workers are highly wage dependent and express much greater discontent than their equivalents in Wenzhou. Theoretically, we contribute to the literature on informality through a discussion of " ancillary informal work, " highlighting how access to certain kinds of informal work both subsidizes and is facilitated by formal sector employment.