tasker

1. One who master. [Eng. task , v.; -er.] imposes a task or tasks; a task- "To task the tasker." Snakesp.: Love's Labor's Lost , il. 2. One who performs a task or piece of work or labor; in Scotland, often a laborer who receives his wages in kind. "He is a good daysman, or journeyman, or tasker ."Ward: Sermons, p. 105.