Workers' ability to control their work schedules and hours varies significantly among industrialized countries. We integrate and extend prior research from a variety of literatures to examine antecedents of control and worker outcomes. Using hierarchical linear modeling and data for 21 countries from the 1997 ISSP Work Orientations Survey supplemented with national indicators developed from a variety of sources, we find that control is associated with country characteristics (affluence, welfare state generosity, union coverage, and workingtime regulations), worker attributes (being male, being older, and being better educated), and job characteristics (working part-time, being self-employed, having higher earnings, and having more advancement opportunities). We also examine the relationship of control to job satisfaction, organizational commitment, and strain-based work-family conflict. Generally, low levels of control are linked to negative outcomes for workers, especially for women, an effect sometimes modulated by country-level policy measures.