Hi there,
Very often you can follow clues from the Census to find out Occupations.
For example, my Great Grandfather was described as a 'StoneMason' on my Grandfather's Wedding Cert. However, from looking at Census Entries & Addresses, I was able to ascertain that he was actually a Slate Quarrier...& it was then down to guesswork to find the Quarry involved.
Best of Luck,
Romilly.