Worker given cards worrying many (8)
I believe the answer is:
handyman
'worker' is the definition.
(handyman is a kind of worker)
'cards worrying many' is the wordplay.
'cards' becomes 'hand' (I've seen this in other clues).
'worrying' is an anagram indicator.
'many' anagrammed gives 'yman'.
'hand'+'yman'='HANDYMAN'
'given' is the link.
(Other definitions for handyman that I've seen before include "Odd-jobs person" , "Repairer" , "One hired to do odd jobs" , "Jack-of-all-trades" , "One employed to do odd jobs" .)