The Defence Forces are a 24/7 organisation and personnel can be called upon at any time to undertake duties in relation to the tasks assigned by Government. The nature of the training and the roles discharged by members of the Defence Forces can range from general office duties, to education and instruction to security duties that can be for periods of 24 hours each. In addition, when on overseas service, on duty and on call periods are extensive and change on a daily basis. Therefore, hours worked each week will differ for members of the Defence Forces irrespective of their rank, depending on their daily and operational tasks. As a result, it is not possible to provide a definitive response concerning the average hours worked per week per person for the ranks specified.