Wellness programs boost employee health, and participants in such programs also are more engaged employees, according to a recent study.Employees at companies that offer such programs are "significantly" more satisfied with their jobs, more likely to remain with the company long term, and more likely to recommend it to a friend or family member as a place to work, according to the findings. It's up to employers, though, to use communications, education, and leadership to encourage employees to participate in wellness programs, experts say.