Pity about street's workers (7)
I believe the answer is:
typists
'workers' is the definition.
(typist is a kind of worker)
'pity about street's' is the wordplay.
'about' is an anagram indicator.
'street's' becomes 'st's' (abbreviation).
'pity' is an anagram of 'typi'.
'typi'+'sts'='TYPISTS'
(Other definitions for typists that I've seen before include "Keyboard operators" , "short of key players" , "They operate character printers" .)