I-9, r. 6 - Code of ethics of engineers

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3.08.03. An engineer must inform his client of the approximate cost of his services and of the terms and conditions of payment. He must refrain from demanding advance payment of his fees; he may, however, request a deposit.
R.R.Q., 1981, c. I-9, r. 3, s. 3.08.03; O.C. 2566-84, s. 5.