The Thompson Rivers University Students’ Union is a democratic, membership-based organisation. This is the greatest factor in determining the structure of the organisation and how decisions are made. The membership as a whole is the highest decision-making body, and all members have the ability to exercise their decision-making rights with an equal vote at the Union’s Annual General Meeting. Every year, the members also exercise their right to vote in the election of a Council and Executive Committee of that Council. These representative members undertake the administration of the Union for their one-year term.

The Union also maintains five standing committees to oversee the work of the Union these are the Campaigns Committee, Entertainment Committee, Equity Committee, Policy Committee, and Services Committee. Members of the Board of Directors as well as members at large make up the membership of these committees, which take on the everyday tasks of the Union.

Finally, the Union maintains the Student Caucus. This body tracks institutional issues and provides support for student representatives across the campus. The Student Caucus is made up of all elected and appointed student representatives on institutional bodies, and is co-chaired by the President of the Students’ Union and a second chair elected internally by the membership of the Caucus.