The role of the VTHC is the co-ordination of union activities and campaigns. When a union requires assistance and support for an issue which has broad consequences for more than one union, the VTHC may become involved in a co-ordinating role. It also provides assistance to its affiliated unions with research, negotiations and advocacy.

The VTHC is also the central State organisation for communicating with the public about trade union issues. It represents unionists in lobbying State Parliament for social and industrial reforms. It is the body which most people contact if they have any query about trade unions.