Hamilton : Règlement no 07-170, art. 17(3) — 17 The provisions of this Schedule shall apply to all persons engaging in any plumbing occupations, as

17 The provisions of this Schedule shall apply to all persons engaging in any plumbing occupations, as:

• Before commencing any work, or upon completion of the work, a form of written agreement (including an invoice or written firm estimate of work to be done), shall be entered into by a plumbing contractor with the person for whom the work is to be done, containing the name and address of the contractor and customer and an itemized price or firm estimate of the goods and services to be provided.