### Clue: Non-university man old-school worker for instance? (9)
### Answer: ARTHROPOD 
 ### Explanation: Definition: worker for instance
 "Arthur"(a man's name) **minus**(Non- …) "u"(abbrev. for "university") + O(abbrev. for "old") + POD(a school/herd of marine animals, such as whales).
Defn: An invertebrate animal such as an insect, an example of which/for instance is the worker ant.