Rapidly rising health care costs and an unstable job market have placed increasing numbers of workers at risk of losing their health insurance coverage. Even workers with secure employment may face changes in the quality of their insurance as employers attempt to shift more of the costs of providing coverage to employees. In 1999, 2001, and 2002, Princeton Survey Research Associates conducted national surveys of adults to assess the stability and quality of coverage, financial and nonfinancial barriers to health care, and experiences of people seeking coverage in individual insurance markets. A new survey will update this important trend information while examining emerging areas of research, such as the impact of poor-quality coverage on health, worker productivity, and family finances, and consumers' understanding of how defined contribution plans and other new kinds of coverage function. This information will help inform federal debates concerning the future of health insurance coverage.