To adjust wage rate variation in building trade labor according to the progress of works by building category involved for compensation or reimbursement in building construction contract.

As reference or yardstick to the fluctuation trend of building labour wage rate for building contractors to calculate their risks in tender pricing.

A reference to adjust previous cost estimate on building labor to current cost in regards to abandoned or deferred building projects

As a tool of reference to make judgement based on increased property prices

To gauge a reasonable property price increase/escalation in relation to variation in major building labor cost