Tasker (plural: taskers) (n): Refers to the task given by one induvidual to another individual to complete, Normally in a corporate structure where the task-giver is above the taskee in the company org-chart.
NB: Although Webster defines ‘tasker’ as ‘one who imposes tasks’, it has seemingly been molded into this meaning. If we take the corporate meaning at face value and Webster’s meaning at face value, then we have a very confusing conversation indeed!