Sentence:  [C]arpel tunnel syndrome ... is seen in many workers who do repetitive tasks by hand, including telephone operators, <WSD>envelope stuffers</WSD>, cashiers and meat processors. 
Meaning of the word marked with <WSD> tags:  One whose job is to manually insert sheets of printed paper into envelopes for mailing, especially as an example of a person whose work is menial and unfulfilling.