No. 1: Installation, maintenance and repair Average workday: 8.35 hours (AP)
No. 2: Transportation and material moving Average workday: 8.27 hours (Homan Li )
No. 3: Production Average workday: 7.97 hours (Angel Navarrete / Bloomberg)
No. 4: Management, business and financial operations Average workday: 7.86 hours (Mario Tama / Getty Images)
No. 5: Construction and extraction Average workday: 7.74 hours (Mark Lennihan / AP)
No. 6: Office and administrative support Average workday: 7.49 hours (Alex Brandon / AP)
No. 7: Service Average workday: 7.45 hours (Robert Gauthier / Los Angeles Times)
No. 8: Professional and related Average workday: 7.31 hours (Mahesh Kumar A / AP)
No. 9: Sales and related Average workday: 7.29 hours (NASHA LEE / BLOOMBERG NEWS)
No. 10: Farming, fishing and forestry Average workday: 6.92 hours (Gonzalo Arroyo Moreno / Getty Images)
