Worker who keeps an eye on the hands (5-7)
I believe the answer is:
clock-watcher
'worker who keeps an eye on the hands' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'worker who keeps an eye' is the wordplay.
'worker who' becomes 'clocker' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'keeps' means one lot of letters goes inside another.
'an eye' becomes 'watch' (I've seen this in another clue).
'clocker' going around 'watch' is 'CLOCK-WATCHER'.
Can you help me to learn more?
(Other definitions for clock-watcher that I've seen before include "Worker preoccupied with finishing time" , "One who can't wait to stop work" , "Worker too aware of the time" , "One impatient to leave work" .)