Occupations which are characterized by their usage of magic. These occupations usually require a trait (like Arcane Background) in order to access these Occupations.
Alternatively, GMs may wish to make magic-users rarer, especially considering their sheer power they can bring to a game. In this case, characters with a Magician occupation could be limited to one player in a party, or a d10 roll may be rolled by each player before character creation with a 10 result allowing them to take Magician Occupations. If these methods are used, consider lifting the trait-based restrictions as these work instead to replace it as a stricter option.
Inventor
Archivist
Mind Sculptor
Fatebinder
Spiritualist
Transmuter