This book was written based on ongoing undergraduate research targeted at solving the problem common between contractors and clients in building construction projects in the Nigerian construction industry. The authors of the book are both undergraduate research student (main author) and lecturers (co-authors), who have special interest in addressing issues confronting the health, safety and welfare of stakeholders and visitors to construction sites. The book is therefore recommended to construction stakeholders across the globe to tap from the wealth of experience of the authors in addressing related problems that may be experienced.