An outreach project of the Great Lakes Center for Occupational Health and Safety
An outreach project of the Great Lakes Center for Occupational Health and Safety
Seated or standing tasks, light hand/arm work, occasional walking on level surfaces. Little sustained muscle effort required.
Sustained walking, moderate lifting (up to ~20 kg / 44 lb), pushing or pulling loaded carts, repeated bending and reaching.
Sustained vigorous exertion — heavy lifting, carrying, shoveling, or pushing/pulling heavy loads. Arms, legs, and trunk all engaged continuously at high effort.
Maximum sustained physical exertion with whole-body effort. More common than many realize. Requires the greatest heat stress precautions at any elevated temperature.