Ergonomics Overview
Ergonomics is the science of fitting the job to the worker. Designing work stations and tools to reduce work-
related musculoskeletal disorders (MSDs) can help workers stay healthy and companies to reduce or eliminate
the high costs associated with MSDs.
Who is Covered?
There are no specific ergonomics regulations, although OSHA will continue to cite ergonomic injuries under the
General Duty Clause of the Occupational Safety and Health Act, Section 5. All employees are covered by OSHA
under this section.
Causes of MSDs
Prolonged exposure to ergonomic risk factors can cause MSDs. Conditions likely to cause MSD problems include:
Exerting excessive force.
Excessive repetition of movements that can irritate tendons and increase pressure on nerves.
Awkward postures, or unsupported positions that stretch physical limits, can compress nerves and
irritate tendons.
Static postures, or positions that a worker must hold for long periods of time, can restrict blood flow and
damage muscles.
Motion, such as increased speed or acceleration when bending and twisting, can increase the amount of
force exerted on the body.
Compression, from grasping sharp edges like tool handles, can concentrate force on small areas of the
body, reduce blood flow, nerve transmission and damage tendon sheaths.
Inadequate recovery time due to overtime, lack of breaks and failure to vary tasks, leave inadequate
time for tissue healing.
MSDs can affect nearly all tissue in the body: nerves, tendons, tendon sheaths and muscles. The most frequently
affected areas of the body are arms and the back.
Employee Training
There are no specific training requirements for ergonomics. However, employees who have been trained to
identify and avoid ergonomic hazards are better able to avoid those hazards, leading to a safer workplace. To
get the most out of an ergonomics program, an employer can train workers on:
Common MSDs and their signs and symptoms.
The importance of reporting MSDs, and signs and symptoms, as soon as possible.
How to report MSDs in the workplace.
Risk factors and work activities associated with MSDs hazards.