This scheme is applied during a 9-week intervention
period to achieve construction safety improvement, and it
includes (1) baseline observation, (2) safety training, (3) followup
observation and (4) feedback and reinforcement. The PBBS
intervention is conducted and cycled on the construction site until
satisfactory safety requirements are achieved. Finally, in this study
the PBBS system was removed to validate the effectiveness of the
PBBS approach with respect to the continuous improvement of
behaviors.