Private practice, Stanstead and Sherbrooke, Lower Canada (now Quebec), 1827-1833
King`s counsel for Lower Canada (now Quebec), 1833
Member, Legislative Assembly for the Province of Lower Canada (now Quebec), 1829-1835
Internal improvement commissioner, Chicago, Illinois, 1837
State senator, Illinois, 1838-1839
State representative, Illinois, 1840-1842, 1858-1860
Clerk, Illinois Supreme Court, 1841-1848
Private practice, Chicago, Illinois, 1846-1863
Publisher and editor, The Argus, Chicago, Illinois, 1850
Reporter, Illinois Supreme Court, 1849-1863