Occupational Health and Safety (OHS) standards require jobsites to maintain certain levels of cleanliness and safety. If a subcontractor fails to clean up after completing work or does not follow OHS guidelines, the General Contractor or Owner must step in to meet these standards. The costs for such cleanup activities, from debris removal to hazardous material handling, can be back-charged to the party who did not meet their cleanup obligations. Cleanup back charges are generally supported by logs, timestamps, and any official notices or citations regarding safety or health violations.