I am the boss in a small office, with 2 current full-time employees and 1 former employee I keep in touch with. I'm having a small wedding (less than 50 people) and I'm torn on whether to invite them. On the one hand, we try to keep our office friendly and I have been talking to them about the wedding plans. On the other hand, we don't normally spend time outside of work and I don't want them to feel obligated to come and buy a gift, since I'm their boss.