As Mark points out, going public with health information not only demonstrates Johnson & Johnson's focus on wellness--it touts the above-average health of its employees. (Kudos!) I also think it's smart to put all this in the "Sustainability Measures" section of the report. After all, if your employees are unwell, how can your business sustain growth?
Even if you're not Johnson & Johnson, you can still reap the PR benefits of having an employee wellness program. If I worked in Human Resources, I'd be sure to tell potential hires about the program's benefits and successes.