MineJobs bukkit plugins 1.6.4
It’s a lightweight jobs plugin designed to allow staff members to create and modify jobs for players on their servers. No fluff though. No major chat outputs; no over complicated commands. Just go to work, and get money. Players, depending on their jobs, can earn money by building, digging, or killing just about anything.
Download here : http://www.5minecraft.net/minejobs-bukkit-plugins/