Worker on call in remarkably gutless corporation (4,5)
I believe the answer is:
beer belly
'corporation' is the definition.
(I've seen this before)
'worker on call in remarkably gutless' is the wordplay.
'worker' becomes 'bee' (a worker bee).
'on call' becomes 'bell' (bell can mean a phone call. I am not sure about the 'on' bit.).
'in' means one lot of letters goes inside another.
'gutless' means to remove the middle letters.
'remarkably' with its centre removed is 'ry'.
'bell' placed within 'ry' is 'rbelly'.
'bee'+'rbelly'='BEER BELLY'
(Other definitions for beer belly that I've seen before include "Corporation" , "Protuberant stomach" , "Drinker's paunch" , "Spare tyre due to consumption of alcohol" , "Drinker's spare tyre" .)