Health screening surveys play a key role in understanding military personnel’s perceived climate of their organization. These screenings provide participants with the opportunity to self-report on many aspects of their job and their personal well-being. Nonparticipation in these health screenings is of concern. The continuum of resistance model is one way to measure non-participation bias. Participants who answer a survey without additional reminders are thought to have little resistance to responding to the survey, and participants who need additional reminders, especially a final reminder email, are thought to have a higher resistance to responding to the survey. This study examines early, intermediate, and late responders on resistance behaviors, substantive survey results, and nonresponse bias for two samples. Online occupational health screenings were available to two U.S. Air Force wings for a 9-week period. Late responders showed higher rates of resistance behaviors and similar rates for quality of responses, burnout, and psychological distress. Reminder emails throughout the data collection effort were important to elicit a greater number of responses. However, responses recorded after the final reminder email resulted in similar outcomes, and the extra week of data collection did not change results for either sample.