Subject to OH&S requirements, breaks need to be recognized as an important tool for Fatigue Management.
Unpaid meal breaks shall be more than 30mins, but no more than 60mins. Breaks less than 30mins are counted as crib breaks / time on duty. If the OP is required to continue on duty without a meal or crib break for more than six hours, overtime rates apply thereon until a meal or crib break is given.
Insufficient break between shifts:
If the OP is required to perform work without a break of 11 hours after finishing work, overtime rates apply for all ordinary duty hours worked before the expiration of 11 hours.