In addition to education, workers need to be better motivated to get vaccinated and that starts at the top with the institutional culture. There must be strong administrative support for a culture in which annual flu vaccines for employees is an expectation and a source of pride in the staff.
One method is to make flu vaccines free for employees at work. Eliminating the cost barrier and making access as easy as possible demonstrates that a high flu vaccination rate is a priority for senior leadership.
Another method is making it fun by setting up an internal competition among hospital and facility floors and departments to determine which can achieve the highest vaccination rate among their staffs. Senior leadership can support that internal competition with rewards and incentives like gift cards or health insurance premium rebates, and even a vaccination party.
Another very low cost way to encourage healthcare workers to get flu shots is to have staff members who have been vaccinated wear stickers or buttons indicating their vaccination status, putting subtle pressure on those who haven't been vaccinated. That subtle pressure also can come from patients, residents and their families who will undoubtedly notice that some staff are wearing stickers or buttons and others aren't.
Preventing influenza is the best way to reduce the risk of influenza-associated complications in your facility. Patient, resident and staff vaccination is the number one recommendation for prevention, alongside universal/standard precautions, like hand washing and disinfecting. Remember that incentives are more effective than penalties, and targeted education will do more to raise vaccination rates than mandates and requirements.