Procedures and programmes of safety management system of construction firms are naturally expected to lead to highly safe construction sites if they are well followed and implemented. Research studies however, claim that accident and injury rate in many developing countries such as Nigeria is considerably higher than in Europe, U.S. and Australia (Idoro, 2004 & 2007). Koehn, Ahmed & Jayanti (2000) in Bust, Gibb & Pasquire (2004) reported that statistics has shown that there are 8 or 9 times as many fatalities and accidents on construction sites in developing countries than in industrialized developed regions.