Select committees are 'permanent' parliamentary committees appointed by the House to perform a variety of tasks on the House's behalf, including scrutinising the work of all government departments and examining expenditure, procedures, and domestic administration of the House. Committees determine the subjects into which they will inquire and they have extensive powers to gather evidence, both written and oral. Their findings and recommendations are submitted to the House and published as reports. There are around 40 select committees in the Commons, comprising departmental and non-departmental committees, domestic and sub-committees. There are also a number of joint committees, which are comprised of members from both Houses, such as the Joint Committee on Human Rights.