This paper examines the complexity of low-income mothers' child care arrangements, with attention to nonstandard job schedules and child care subsidies. Data come from the Women's Employment Study, a panel study of low-income mothers. Of interest is whether nonstandard work schedules and child care subsidies are associated with the type and amount of care families' use. Findings demonstrate that net of other factors, respondents who work evenings rely less on formal care, but use a significantly greater number of care hours annually. In addition, net of other factors, subsidy receipt is related to more formal care and a greater number of care hours annually. The robustness of these findings is examined with fixed effects regressions using three waves of WES data. (author abstract)