Minecraft wiki entry for Villager, associated text: Villagers who have already claimed beds‌[Bedrock Edition only] (other than babies and nitwits) seek employment by searching a 48-block horizontal radius[verify] for a job site block. An unemployed villager acquires a profession and a job by claiming the first unclaimed job site block it can detect in that area. A job site block can be detected as long as it is in range, not already claimed, and the villager can pathfind to the block to claim it. This means if they cannot see or get to the block, they cannot claim it.‌[Java Edition only]