Violence in the workplace is a serious public health problem. Yet, to
date, little has been documented relevant to non-fatal events associat
ed with physical assault. The aim of the present study was to identify
the magnitude of work-related physical assault in Minnesota and to id
entify potential risk factors; both fatal and non-fatal cases were inc
luded, Minnesota workers' compensation records, relevant to assault, w
ere used to identify 712 cases involving more than three days of lost
work time for 1992; six homicide cases were included. Assault rates we
re calculated by industry and occupation. Women had an assault rate tw
ice that of men (51 versus 26 per 100,000 workers), Workers in industr
ies of social services (340), health services (202), and transportatio
n (914) had the highest rates of assault per 100,000 full-time employe
es, The fact that in addition to overall workers' compensation costs o
f $1.6 million, the average lost time for closed compensated cases was
54 days (median, 14 days) and time to reach maximum medical improveme
nt for 44 % of the cases reporting was 156 days (median, 83 days), ind
icates a major problem. The findings suggest that specific groups of w
orkers are at risk for physical assault on the job. Further research i
s essential to identify specific risk factors that will enable the dev
elopment of appropriate prevention strategies.