Since the 1980s, many employment relationships in Taiwan have evolved from regular and long-term to contingent and short-term, with widespread downsizing adding a considerable amount of instability. Since these changes are part of a global trend, there is a growing literature concerning their influences on worker attitudes and work life quality. Here we analyze the impacts of changing employment practices on the quality of work life among Taiwanese workers, specifically analyzing the effects of nonstandard work arrangements and downsizing on job satisfaction. Data are from the 2005 Taiwan Social Change Survey, First Wave of the Fifth Phase: Work and Life Module. Our two main findings are (a) degree of use of nonstandard workers exerts a range of negative impacts on job satisfaction among regular workers, and (b) degree of downsizing exerts similar negative effects. We also discuss the moderating impacts of using nonstandard workers as part of a downsizing strategy.