Got the flu? Let’s hope not. But if you do, here’s hoping your employer provides paid sick days. You need them for yourself. You also need them so you can protect your co-workers and the public from catching the flu from you. During the recent swine flu outbreak 8 million sick workers showed up on the job, spreading the flu to 7 million others. Got the flu? Stay home! That’s the advice of public health experts, such as Dr. Barbara Ferrer of the Boston Public Health Commission. But what if you can’t stay home? What if you’re among the almost 1 million workers in Massachusetts without access to...