Incidence rates for nonfatal occupational injuries and illnesses in manufacturing by type of case, 1976 and 1997 Cases per 100 full-time workers 1976 1997 Total cases 13.2 10.3 Total lost workday cases 4.8 4.8 Restricted work activity only 0.4 2.4 With days away from work 4.4 2.4 Cases without lost workdays 8.4 5.4