George Mawbey had previously worked in this capacity for an ironmonger and emancipated convict, Samuel Onions, in Sydney in1837.
After leaving Onions' employ, he then appears to have started his own business as a 'tinman', and then acquired a publican's licence.
He was the publican of the Hope & Anchor hotel on the corner of King and Pitt Streets, Sydney for two years before heading to Adelaide to start his own refreshment rooms business there.
On his return to Sydney he appears to have worked as a clerk for eight years before taking his family to Dural, near Parramatta.
According to the old church BDM records his occupations and abodes were:
1842 Clerk at booksellers Darlinghurst
1843 Stationer Pitt Street
1845 Clerk Camperdown
1847 Office clerk Redfern
When he was at Dural, he was the schoolmaster at the Church of England diocesan school.