When Is It Your Responsibility To Chip In:
If you’re organizing a special occasion out at a restaurant or bar to celebrate a friend’s birthday or other life or career milestone, you can’t expect your friend to pay her own way. It’s the group’s responsibility to split the honoree’s tab among them. On the other hand, it’s not okay to invite a bunch of friends out to dinner to celebrate your own birthday, and then expect them to chip in for you. If you’re the one who suggested the dinner, it’s incumbent upon you to offer to pay for your own meal.