The job a character currently occupies determines their role in combat. Each character may invest in any and all of the available jobs in Last Odyssey, but may only occupy one job at a time. Out of combat, they may switch between jobs at will, while in combat they must switch jobs during the paradigm phase. While they occupy a job, they may use any of the abilities that you have unlocked via character advancement except for the capstone ability, which can only be used by their eidolon. Any of the unlocked passive abilities for a job, such as Trained Spellcaster, only apply if the character currently occupies the job. In addition, they gain extra bonuses to three different statistics equal to their three attributes.
In Last Odyssey, there are six distinct jobs: Striker, Caster, Healer, Defender, Support, and Saboteur.