Graduate teacher with job as support for the retired (7)
I believe the answer is:
bedpost
'support for the retired' is the definition.
(retired can mean gone to bed)
'graduate teacher with job' is the wordplay.
'graduate teacher' becomes 'BEd' (BEd - holder of Bachelor of Education degree).
'with' means one lot of letters go next to another.
'job' becomes 'post' (post is a kind of job).
'bed'+'post'='BEDPOST'
'as' is the link.
(Other definitions for bedpost that I've seen before include "one possibly sharing our secrets?" , "Upright support found in sleeping chamber" , "support in retirement" , "On which Lonnie Donegan's chewing gum might have lost its flavour overnight?" , "Corner support for sleeper" .)