Aside from the jokey "Unemployed" and "Nitwit" professions, there are 13 villager jobs in Minecraft. Villagers will randomly take on jobs, but you could personally decide what they specialize in with the proper job block.
These items are essentially profession-based workstations, such as a Blast Furnace or Composter, which is what villagers need to do their work. Job blocks are craftable from gathered materials you'll find while exploring Minecraft.
Below is a list describing every job's service and job blocks if you'd like to take matters into your own hands:
| Villager Job | Job Block | Service |
|---|---|---|
| Armorer | Blast Furnace | Trades iron, armor, and chain. |
| Cartographer | Cartography Table | Trades maps, frames, and banners. |
| Cleric | Brewing Stand | Provides Redstone dust, Bottle o' Enchanting, and other magical items. |
| Butcher | Smoker | Provides cooked meat. |
| Farmer | Composter | Provides valuable food items and ingredients. |
| Fisherman | Barrel | Provides cooked seafood and enchanted fishing rod. |
| Fletcher | Fletching Table | Trades flint, bow, crossbows, and arrows. |
| Leatherworker | Cauldron | Trades leather armor, saddle, and horse armor. |
| Mason | Stonecutter | Trades various quartz, terracotta, and bricks. |
| Shepherd | Loom | Provides decorative carpets, paintings, and wool. |
| Toolsmith | Smithing Table | Trades valuable tools like shovel, hoe, and pickaxe. |
| Weaponsmith | Grindstone | Provides enchanted weapons and minerals. |
| Librarian | Lectern | Provides enchanted books, name tags, clocks, and more. |
At times, you may encounter a wandering trader in Minecraft. These mobs aren't villagers, but they function similarly.
Usually, they have a randomized assortment of items in stock that you can purchase. You can't manually spawn a wandering trader, but they regularly appear after one in-game day passes within a 48-block radius of your location.