A coworker who seemingly spends his entire workday visually immersed on meaningless activities while all of his collegues are extremely busy working on real business. His outward appearance suggests he is diligently involved in some pertainent project when, in fact, if the contents of his screen are inspected, it becomes quickly apparent that he is just putzing away the hours on some usless bullshit. Usually the putz master is a nice person and has been put into a position that intellectually they are unable to perform so the coworker is confused as to whether they should help support his pitiful facade or alternatively end it all in the parking lot.
A person who takes too long and is too fussy with insignificant details while performing a task thereby stressing out coworkers or the person waiting for completion of the task.