Hazard evaluation generally deals to define the ranking of the hazards in the work environment and it ignores the interaction of hazards. This paper aims to overcome this drawback so that fuzzy cognitive map (FCM) approach is used to analyze the interaction of hazards related with sheathing tasks in a construction firm. FCM approach can be insufficient for hazard evaluation in long period due to certain budget and time allocated by the firm. When the firm allocates more time and budget for a process, the firm must limit allocated time and budget for the other processes. This paper aims to overcome this problem so that a linear programming is used to optimize the goal and resources of the firm. This paper contributes on hazard evaluation of sheathing tasks in a construction firm with considering the interaction of the hazards and the capacity of the firm.