Ordinary Hours of Work The ordinary hours of work will be worked any time between 6.00am to 6.00pm Monday to Friday. Ordinary hours of work may be varied by agreement between the Employer and the majority of the employees concerned and the ETU State Secretary (via the relevant full time ETU Official) to accommodate the hours or work required for the most efficient and safe operation of the Employer and the requirements of its client. Where agreement is reached to work alternate hours, occupational health and safety principles will prevail. Proper health monitoring procedures will be introduced and suitable rosters clearly agreed prior to commencing work. Adequate supervision must always be provided. Matters on which agreement may be reached include: