Works ever so randomly around union (7)
I believe the answer is:
oeuvres
'works' is the definition.
(an oeuvre is someone's collected works)
'ever so randomly around union' is the wordplay.
'randomly' indicates anagramming the letters (I've seen 'roaming randomly' mean this).
'around' means one lot of letters goes inside another.
'union' becomes 'U' (common abbreviation as in 'Trades Union Congress').
'ever'+'so'='everso'
'everso' anagrammed gives 'oevres'.
'oevres' going around 'u' is 'OEUVRES'.
(Another definition for oeuvres that I've seen is " Bodies of (literary) works".)