Supplemental Digital Content Figure 1 Supplemental Digital Content Figure 1. Share of dollar value of private sector construction, by type, 2015 (reference 22)

Supplemental Digital Content Figure 2 Supplemental Digital Content Figure 2. Residential construction as a percentage of work done, selected specialty trades, 2012 (reference 22)

Supplemental Digital Content Figure 3 Supplemental Digital Content Figure 3. Distribution of leading causes of fatalities in construction, 2015 (All employment) (reference 22)

Supplemental Digital Content Figure 4 Supplemental Digital Content Figure 4. Distribution of leading causes of nonfatal injuries resulting in days away from work in construction, 2015 (Private wage-and-salary workers) (reference 22) Contact w/ objects (33.2%) Falls, Slips, Trips (29.9%)

Supplemental Digital Content Figure 5 Supplemental Digital Content Figure 5. Number and percentage of construction establishments and employees, by establishment size, 2012 (With payroll) (reference 22) Establishment size Number of % of all Number % of all (number of employees) establishments establishments of employees employees 1 to 9 484,866 81.1% 1,409,984 24.9% 10 to 19 58,731 9.8% 805,819 14.2% 20 to 99 48,151 8.1% 1,868,325 33.0% 100 to 499 5,866 1.0% 1,069,382 18.9% 500 or more 452 0.1% 516,112 9.1% Total 598,065 100.0% 5,669,623 100.0%