Stay out of sight of ale, if people work drunk (4,1,3,7)
I believe the answer is:
keep a low profile
'stay out of sight' is the definition.
(I've seen this in another clue)
'ale if people work drunk' is the wordplay.
'drunk' is an anagram indicator.
'ale'+'if'+'people'+'work'='aleifpeoplework'
'aleifpeoplework' is an anagram of 'KEEP A LOW PROFILE'.
'of' is the link.
(Other definitions for keep a low profile that I've seen before include "avoid prominence" , "Try not to attract attention" , "Remain inconspicuous" .)