The leading safety hazards on construction sites include: falls, caught between objects, electrocutions, and struck by objects. All four of those hazards have caused injuries and deaths throughout the world of construction sites. Failures in hazard identification are often due to limited or improper training and supervision of the construction site workers. Examples of areas were there are limited training includes: tasks in design for safety, safety inspection, and monitoring safety. Failure in any of these areas can result in an increased risk in exposing workers to harm in the construction environment. Construction Site signs clearly state what protective actions must be taken to minimise any risk.