Percent distribution of occupational injuries and illnesses involving time away from work, by source, 1999 Source of illness or injury Percent Floors, walkways, ground surfaces 16.0 Worker motion or position 15.7 Containers 14.4 Parts and materials 11.3 Vehicles 8.1 Machinery 6.7 Tools, instruments, and equipment 6.2 Health care patient 4.3 Furniture and fixtures 3.4 Chemicals and chemical products 1.7