Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Job Classification

In most duration tables, five job classifications are displayed. These job classifications are based on the amount of physical effort required to perform the work. The classifications correspond to the Strength Factor classifications described in the United States Department of Labor's Dictionary of Occupational Titles. The following definitions are quoted directly from that publication.

Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.


MDGuidelines Occupational Information for
Stacker, Machine (Woodworking) Alternate Titles: Lumber-Piler Operator; Stacker; Wood Piler

Tends machine that stacks or unstacks lumber to load or unload kiln car to level of lumber table: Starts conveyor that carries lumber onto kiln car in layers, drops stickers between layers, or removes dried lumber from car. Straightens lumber on conveyor for even flow onto stack, using handhook. May record data such as thickness, grade, length, and quantity of lumber stacked. May drive kiln car to transfer lumber car to kiln or storage [KILN-TRANSFER OPERATOR (woodworking) 569.683-010]. May tend machine that stacks inspected boards in layers of specified width prior to further processing and be designated Stacker (furniture). When concerned only with unloading kiln cars, may be designated Unstacker (woodworking). GOE: 06.04.03 STRENGTH: M GED: R2 M1 L1 SVP: 2 DLU: 78

This job title falls within the Medium job class.
Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

The following medical conditions frequently affect employees with this job class:

Pregnancy, Normal
Pregnancy is the condition of having a developing embryo or fetus in the body as the result of the union of an ovum and spermatozoon (conception). P...
Source - Medical Disability Advisor

Sprains and Strains, Back
A back sprain involves injury of one or more nonmuscular structures (such as ligament, disc, facet, or capsule) of the back, whereas a strain involv...
Source - Medical Disability Advisor

Muscle Injury
Any muscle in the body may be damaged or injured. The various types of muscle injuries are categorized as strains, bruises (contusions), detached in...
Source - Medical Disability Advisor

Repetitive Strain Injury
Repetitive strain injuries (RSI), also known as cumulative trauma disorders (CTD), are labels for musculoskeletal pain that is associated with physi...
Source - Medical Disability Advisor

Fracture
A fracture is a structural break or disruption in the continuity of the bone regardless of the size or shape of the break. According to their cause,...
Source - Medical Disability Advisor

Sprains and Strains, Lumbar Spine
The lumbar spine consists of five bony vertebrae separated by intervertebral discs. The lumbosacral region of the spine carries the upper body's wei...
Source - Medical Disability Advisor

Sprains and Strains
Sprains are injuries to ligaments, the fibrous bands that connect bones to bones and stabilize joints. Strains are injuries to muscles or to tendons...
Source - Medical Disability Advisor

Depression, Major
Major depression (including major depressive episode) is a mood disorder characterized by the presence of sad, empty, or irritable mood, with somati...
Source - Medical Disability Advisor

Low Back Pain
Low back pain is a symptom, not a specific disease. Low back pain is usually described as discomfort in the lumbosacral region of the back that may ...
Source - Medical Disability Advisor

Back Pain
Backache or back pain is a common symptom and affects up to 85% of individuals in their lifetime {"Back Pain"}. In most cases (80%), there is no cle...
Source - Medical Disability Advisor




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