Occupation and (social) class refer to different social mechanisms.
Carles
C
Muntaner
Edwin
E
Ng
Joan
J
Benach
Haejoo
H
Chung
D003327:Coronary Disease / Q000453:epidemiology*; D006801:Humans; D008297:Male; D009784:Occupational Diseases / Q000453:epidemiology*; D012923:Social Class