He also served several times as acting Attorney-General of the Cape, in the absence of the Attorney General Mr Griffith, and distinguished himself greatly with his extreme industriousness.
Unlike Mr Griffith, Simeon Jacobs was strongly supportive of the multi-racial nature of the Cape's constitution, and for greater Black political empowerment.
[2] He was vehemently critical of Carnarvon's plan to enforce confederation on the southern African states, and spent increasing amounts of time in the final years of his career attacking it as being illegal and highly unconstitutional.
In August 1877 he retired from active life, due to rapidly declining health, to be succeeded as attorney general by Advocate Stockenstrom.
He continued to work with the Cape's executive council, but refused to serve under the following Prime Minister, John Gordon Sprigg for conscientious reasons.