Dog right for an underground worker (7)
I believe the answer is:
collier
'an underground worker' is the definition.
'collier' can be an answer for 'worker' (collier is a kind of worker). I am not sure about the 'an underground' bit.
'dog right for' is the wordplay.
'dog' becomes 'collie' (collie is a kind of dog).
'right for' becomes 'r' (I've seen this in other clues).
'collie'+'r'='COLLIER'
Can you help me to learn more?
(Other definitions for collier that I've seen before include "He works in a coal mine" , "Ship carrying coal" , "unable to avoid contact with mine" , "Pitman" , "Miner; coal ship" .)