Cultural, economic, labor cost, and labor relations factors influence international human resource management perspectives and practices. Cultural differences exist between countries in areas like incentives, individualism, and masculinity/femininity. Economic systems also vary between free market and socialist countries, affecting efficiency priorities. Labor costs differ between nations, impacting performance-based pay. Finally, labor relations models range from codetermination to government intervention, shaping HR policy formation. These four major factors form the perspective for international HRM and influence resulting practices.