On March 21, NIOSH hosted a new webinar in its Total Worker Health webinar series, “Numbers to Know How: Linking Research to Healthier Workplace Practices.” Three speakers discussed results from the Workplace Health in America Survey, a survey of U.S. employers’ health programs and practices sponsored by CDC; the National Health Interview Survey, which collects data on a range of health topics through personal household interviews conducted by the U.S. Census Bureau; and the National Occupational Mortality Surveillance System, a NIOSH program intended to monitor trends or patterns in mortality by occupation or industry over time. The presenters highlighted the importance of health survey data to inform TWH interventions.  One of the speakers, L. Casey Chosewood, MD, MPH, director of NIOSH’s Office for TWH, previously presented a general session at AIHce 2013 in Montreal. The other speakers were Laura A. Linnan, ScD, a professor at the University of North Carolina, Chapel Hill Gillings School of Global Public Health, and Sara Luckhaupt, MD, MPH, a supervisory medical epidemiologist for NIOSH and a commander in the United States Public Health Service Commissioned Corps. The webinar recording is expected to be made available at NIOSH’s TWH . NIOSH encourages occupational health and safety professionals, health educators, program managers and administrators, human resources professionals, risk managers, and employers to view the webinar. NIOSH defines TWH as "policies, programs, and practices that integrate protection from work-related safety and health hazards with promotion of injury and illness prevention efforts to advance worker well-being." The free webinar series focuses on the latest research and case studies related to TWH. The previous webinars in the series are available as . Previous webinars include “Sedentary Work: Implications and Interventions for Worker Safety and Health,” “Preserving Lung Health: At Work and Beyond,” and “A New Look at the Way We Work: Nonstandard Work Arrangements and Their Impacts on Worker Safety and Health.”