Trading rule
Changing Professions
A villager can lose or change its profession only while it has never traded; one trade locks the profession permanently.
Trading
| Taking a profession | An unemployed villager takes the profession of the job site block it has claimed when it comes within 2 blocks of the center of that block. |
| Losing a profession | A villager with no job site block becomes unemployed again if it is a Novice with 0 villager experience. |
| Profession lock | Every trade gives villager experience, so a villager that has traded once keeps its profession and its trades even without a job site block. |
| New trades | A villager that takes a different profession loses its old trades and gets a new random set for the new profession. |
| Unemployed villagers | A villager without a profession has no trades. |
| Nitwits | Nitwits never take a profession and have no trades. |
| Who can trade | The trading screen opens only for an adult villager that has trades. It does not open while the villager is asleep or already trading with another player. |