There's this new question from today:
At the moment it's only tagged with wedding. While being related to wedding, this question generalises to event-photography or any kind of photography where delivery of unedited files is a possible client requirement.
A search for "client" reveals a few questions related to clients that would all benefit from being unified with a tag like this.
There are business, contracts and professional that are related, but there's no overall tag like in other categories, like flash or lens for example. Should there be such a tag? Or are the mentioned related tags sufficient?