[2] It affiliated to the Ghana Trades Union Congress (TUC).
[3] The largest union in the country, in the 1980s under L. G. K. Ocloo it became known for its opposition to the Provisional National Defence Council, and Ocloo was ultimately forced into exile.
A further group left in 2003, founding the Union of Industry, Commerce and Finance (UNICOF).
[3] The TUC accepted UNICOF as a new member, leading the ICU to resign from the TUC, in protest.
[5] This led to a long-running dispute over its offices in the Hall of Trade Unions in Accra.