Table 1.

Main parameters and descriptions.

Parameters	Descriptions
L	The loss due to risk events
p 1	Probability of risk events when construction workers take safe behavior strategy
p 2	Probability of risk events when construction workers take unsafe behavior strategy
α	Contractors' perception on the coefficient of risk loss
β	Workers' perception on the coefficient of risk loss
R	If workers take safe behavior strategy, contractors give incentive to workers
G	If workers take unsafe behavior strategy, contractors impose a penalty on workers
C 1	The supervision cost of contractors under active supervision
C 2	The cost of workers to take safe behaviors under active supervision
F	Reputation income of contractors
Q 1	The government imposes fine on contractors because of workers' unsafe behaviors under active supervision
Q 2	The government imposes fine on contractors because of the workers' unsafe behaviors under passive supervision