Median number of days away from work, by event or exposure leading to occupational injury or illness, 2000 Repetitive motion 19 Fall to lower level 11 Transportation accidents 10 Fires and explosions 9 Fall on same level 7 Slip, trip, loss of balance (without fall) 7 Overexertion 7 Assaults and violent acts by persons 5 Contact with objects and equipment 4 Exposure to harmful substances 3