"The study was conducted by Norm Keith of the firm, Fasken Martineau DuMoulin, LLP. Keith is well known and respected as one of the foremost experts on the issue of health and safety, particularly in the construction industry. The full report can be viewed on the OGCA website under "News & Events" at www.ogca.ca. Some key points were raised by Keith, but the use of "Due Diligence" as a defense in the event of a prosecution is the most important. We asked Keith to compare the two systems, TPSVC and COR (Certificate of Recognition) in respect to their use as a "Due Diligence" defense."