Hut the retiring worker is accommodated in (6)
I believe the answer is:
shanty
'hut' is the definition.
(I know that hut can be written as shanty)
'retiring worker is accommodated in' is the wordplay.
'retiring' becomes 'shy' (both can mean reserved or introverted).
'worker' becomes 'ant' (worker is a type of ant).
'is accommodated in' means one lot of letters goes inside another.
'shy' going around 'ant' is 'SHANTY'.
'the' is the link.
(Other definitions for shanty that I've seen before include "Sailors' song - poor dwelling" , "Seafaring song" , "Number at sea" , "folk song" , "Sea song; crude shack" .)