Office worker endlessly kind is on time (6)
I believe the answer is:
typist
'office worker' is the definition.
(someone who types documents)
'endlessly kind is on time' is the wordplay.
I cannot quite see how this works, but
'is' is found in the answer.
'time' could be 't' (abbreviation) and 't' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for typist that I've seen before include "The old-style secretary, for one" , "Someone paid to copy using a keyboard" , "Pre-computer office worker" , "Skilled keyboarder" , "Forerunner of the word processor operator" .)