Falls to a lower level were by far the most frequent type of fatal fall in the workplace in 1997, comprising 91 percent of the total. Of nonfatal falls, 32 percent were to a lower level, while 63 percent were on the same level.
Of fatal falls to a lower level, the highest number were from a roof, followed by a ladder, scaffold, a nonmoving vehicle, and building girders or other structural steel.
Among nonfatal falls, most were falls to the floor, walkway, or other surface, while a much smaller number were falls onto or against objects.
Bureau of Labor Statistics, U.S. Department of Labor, The Economics Daily, Fatal and nonfatal falls in the workplace at https://www.bls.gov/opub/ted/2000/may/wk1/art01.htm (visited August 19, 2022).