Reference book: Practical Law of Architecture, Engineering and Geoscience (second edition)

A lien act requires the owner of land or a building under construction to:

a. Pay lien only to workers or suppliers with whom the owner has a contract.

b. Hold back the payment for construction until the job is completed.

c. Pay fines automatically if the lien claim is filed within the legal limitations period.

d. Hold back a specified percentage of construction costs to pay possible claims.

-Please help answer this question.