Table 1.

Biomechanical risk factors included in the job exposure matrix. On average, over a working day, and across the sub-jobs included in the occupational group.

Exposure	Rating
Frequency of working with hands above shoulder height	1–3 a
Magnitude of upper extremity loading (can result from push/pull/lift)	1–3 a
Frequency of high grip force	1–3 a
Frequency of handheld tool use	1–3 a
Frequency of using a handheld tool in a fixed position	1–3 a
Frequency of upper extremity static work	1–3 a
Magnitude of hand-arm vibration (HAV)	1–3 b

^a1 = low, 2 = moderate, 3 = high

^b1 = none, 2 = acceptable, 3 = high