The other important aspect of communication for the MP is keeping constituents informed of developments in government or party policy and the implications of government decisions and activity. Members must write many letters and talk to many people both privately and in public forums. The House of Representatives has set up a system of committees to perform functions the House itself cannot do well, such as carrying out investigations, hearing witnesses, sifting evidence, discussing matters in detail and making reasoned conclusions. Committee work is an important part of the duties of a Member of Parliament and generally makes considerable demands on a Member's time. Committee meetings are held during both sitting and non-sitting periods, and in many instances, committees may hold their hearings, public meetings or informal discussions in a number of places throughout the country.
Many backbenchers are members of more than one parliamentary committee.
Committees are given wide powers of investigation. They are valuable vehicles for getting and giving out information and supplement the normal parliamentary role of a private Member considerably. They also provide a direct link between Members and the many sources of information and opinion across the Australian community. In order to make a contribution to the work of a committee, a Member must spend time studying the subject matter of the inquiry. They are expected to contribute to the development and amendment of the policies of the party to which they belong.