PIAWE stands for pre-injury average weekly earnings, which is used in a formula to calculate an injured worker's weekly payments.
PIAWE typically refers to the weekly average of a worker's gross earnings over the 52 weeks prior to their date of injury, though there may be some exceptions to this definition.
When a worker is injured and unable to perform their full duties, they may be entitled to weekly payments based on a percentage of their pre-injury average weekly earnings (PIAWE). This applies when the injury results in total or partial incapacity and leads to a loss of earnings.