The aim of the study is to assess the determining factors and the level of vaccination coverage for those vaccinations recommended to health care workers. The employees of the Apulian Vaccination Services were given an interview-based standardized anonymous questionnaire. Of the 302 replies from the employees, 54.5% of the respondents had received the hepatitis B vaccine and 32.7% the influenza vaccine in the 2007-2008 season. There were 4.6% susceptible to varicella, and 2.6% had been vaccinated. Of the replies received, 9.3% were susceptible to measles or mumps or rubella, and 5.9% had been vaccinated. There is the need for on-going education for vaccine requirements to improve immunoprophylaxis among health care workers.