Emergency medicine services (EMS) will play a key role in any response to a flu epidemic. In order to devise an effective preparedness plan for coping with pandemic, it is necessary to comprehend the factors affecting the willingness of EMS workers to respond during an outbreak.

This study aims to: (1) examine the willingness of the workers of Israeli EMS (Magen David Adom (MDA)) to come to work during a pandemic flu; and (2) identify the factors that will increase the willingness of workers to come to work and the obstacles that will keep them from working during a flu pandemic.

Between November 2009 and January 2010, a representative sample of MDA workers in Israel were given questionnaires asking about their knowledge and attitudes in regard to pandemic flu, and concerning factors that may influence their willingness to come to work. Data analysis included descriptive statistics, central and dispersion measures, analyzes of variance, and an exploratory factor analysis.

The study population included 365 people (290 men and 75 women), with 84% aged 20–49 years. Of the respondents, 92% expressed willingness to come to work during a flu pandemic, even if they were asked and not obligated to report to work. An increase in willingness to come to work was found to be associated with the significance of the role of the workers, the guidance that they receive from the organization, their trust in the system, their knowledge, and their feeling of being protected.

Workers' perception of the significance of their role and their trust in the system were found to be central factors in determining workers willingness to come to work during a time of an emergency.