Question

A 82-employee firm has the following injury and illness record for the
year:
Case 1 - Work-related injury; transferred to another job for 10 days
Case 2 - Work-related illness; 3 days away from work
Case 3 - Work-related injury; one workday away from work; nine more days in restricted work activity
Case 4 - Injury; able to stay at work, but for two weeks employee was unable to do regular job and was
assigned to another one.
Case 5 - Illness; not work-related
a. Calculate the DAFWII.
b. Calculate the DART.

Answer 1

The DAFWII rate is defined as

DAFWII = N/EH * base number of hours worked for 100 full time equivalent employees

where N = number of cases involving days away from work = 2

EH = total number of hours worked by all employees during the calendar year

OSHA defines a full time employee to work 40 hrs/week * 50 week/year = 2000 hrs/year

So 82 employees will work 82 * 2000 hrs/year = 164000 hrs/year

So number of hours worked by 100 employees = 100 * 2000 = 200000

so EH = 164000

so DAFWII = 2/164000 * 200000= 2.439

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DART rate is defined by the same equation as DAFWII but N here = number of cases involving days away/restricted work/job transfers

So for DART calculation N = 4

so DART rate = 4/164000 * 200000 = 4.878