Minecraft Jobs Servers are running popular Minecraft plugin Jobs, each player can pick profession, then start working and earn ingame money or tokens.
Different servers, different Jobs?
Jobs plugin used by servers nowadays can be fully customized, but generally players can earn money for mining blocks (with pickaxe or TNT), building, killing (players or mobs), crafting items, fishing, smeting and more. As you can see just about any task you can do on Minecraft servers can be tied into Jobs plugin.
Earning money with Jobs on Minecraft servers
The main goal of Jobs plugin on just about every server is to allow players to earn ingame money, but it is worth mentioning that different Jobs have different pay rates.