Each member of your party in Octopath Traveler has a Primary Job, and it defines the extent of their abilities at the beginning of the game. Osvald is a Scholar, Castti is an Apothecary, Temenos is a Cleric, Ochette is a Hunter, Partitio is a Merchant, Agnea is a Dancer, Throné is a Thief, and Hikari is a Warrior. Your characters can never change their Primary Job, and will always have access to their Skills.
In addition to a Primary Job, however, each character can also equip a Secondary Job. Secondary Jobs allow each character to take on a different set of abilities, applying JP they've earned to purchase Skills in that Job. Throné can become a Scholar, for example, or Ochette a Warrior, and they have access to all of the same basic Skills as Osvald and Hikari. (This does not include specialty abilities unique to a character, such as Hikari's Learned Skills, or any Latent Powers.)
In order to equip Secondary Jobs on your characters you must first unlock the Job by visiting its Guild. Spread throughout Solistia are eight Job Guilds, and by speaking to the Guild Master you can acquire a Job License. You can then equip that Job on a character. You can unlock up to three Job Licenses for each Job, allowing up to four characters (three plus the original) to use the same Job at once. Job Licenses beyond the first have prerequisites that must be fulfilled before you'll receive a License.
Guild Locations and License Requirements
- First License - Find the Guild
- Second License - Turn in five Ancient Sentinel Cores, dropped and stolen from non-elemental Sentinels, Guardians, and Curators throughout the game
- Third License - Turn in five Almighty Soulstones, dropped and stolen from larger Elementals found throughout the game
- First License - Find the Guild
- Second License - Turn in three Herb-of-Grace Buds, dropped and stolen from Giant Gators in the Sinking Ruins
- Third License - Turn in three Primeval Horn Elixirs, dropped and stolen from Devil Deers in House Wellows Manor
- First License - Find the Guild
- Second License - Turn in the High Priest's Amulet, collected by defeating the boss of the Starfall Spring, a dungeon near Cropdale
- Third License - Turn in the High Priest's Book of Scripture, collected by defeating the boss of the Infernal Castle, a dungeon beneath the wall outside Stormhail - you'll need to bring three NPCs along to access the dungeon
- First License - Find the Guild
- Second License - Turn in the Quicksand Monster's Liver, dropped by the Lord of the Sands in the Quicksand Gaol
- Third License - Turn in the Sea Monster's Whisker, dropped by the Scourge of the Sea in On the Water
- First License - Find the Guild
- Second License - 100,000 leaves
- Third License - 300,000 leaves
- First License - Find the Guild
- Second License - Teach one character Sealticge's Seduction
- Third License - Teach two characters Sealticge's Seduction
- First License - Find the Guild
- Second License - Turn in the Thieves' Gem, which you can Steal from the elderly Townsperson standing at the entrance of Clockbank during the day
- Third License - Turn in the Master Thief's Sapphire Stone, which is located in a chest on the Shipwreck of the Empress