Your employer also doesn't want you to miss work. That's why non-healthcare employers
often offer their employees the flu shot. Before I was a nurse, if my employer offered it, I got it. If they didn't, I didn't. The last place I worked before nursing charged us $15.00 for it. I declined. If they didn't want me to miss work, they could pay for the flu shot. Towards the end, I did get the flu and I have never been so sick. Ended up with Pneumonia. Missed work and did not contaminate my co-workers. (I had already resigned and it was my last week there.)
Since being in nursing, I've always gotten the shot. DH was diagnosed with Influenza A before Christmas. Started Tamiflu. I wiped down everything with clorox wipes, got new toothbrushes, and my DDs and I did not get it. I did get a cold though...weird. Since I sleep in the same bed with him, I figured my risk was greater than the girls. I think the shot worked.