R v Ron Engineering and Construction (Eastern) Ltd, of 1981 is the leading Supreme Court of Canada decision on the law of tendering for contracts. The case concerned the issue of whether the acceptance of a call for tenders for a construction job could constitute a binding contract. The Court held that indeed in many cases the submission of an offer in response to a call for tenders constitutes a contract separate from the eventual contract for the construction. With the release of the decision, the tendering process practiced in Canada was fundamentally changed.