Rover corporation's retaining a lawyer with personal hygiene issue (8)
I believe the answer is:
gadabout
'rover' is the definition.
(someone who roves or roams around)
'corporation's retaining a lawyer with personal hygiene issue' is the wordplay.
'corporation' becomes 'gut' (both can humorously mean belly fat).
'retaining' indicates putting letters inside (inserted letters are held or retained).
'lawyer' becomes 'da' (abbreviation for District Attorney).
'with' is an insertion indicator.
'personal hygiene issue' becomes 'BO' (body odour).
'a'+'da'='ada'
'gut' enclosing 'ada' is 'gadaut'.
'gadaut' going around 'bo' is 'GADABOUT'.
(Other definitions for gadabout that I've seen before include "Rover" , "Pleasure-seeker" , "Person who goes around aimlessly" , "restless type" , "Restless seeker after amusement" .)