what is ergonomics? “ergonomics is an applied science concerned with the design of workplaces,...
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Ergonomics
OSHA Compliance for Temp Agencies and Host Employers
What is Ergonomics?
“Ergonomics is an applied science concerned with the design of workplaces, tools, and tasks that match the physiological, anatomical, and psychological characteristics and capabilities of the worker.” Vern Putz-Anderson
“The Goal of ergonomics is to ‘fit the job to the person,’ rather than making the person fit the job.” Ergotech
“If it hurts when you are doing something, don’t do it.” Bill Black
Why do we care about Ergonomics?
Ergonomic Injuries - WMSDs
Contact with Objects/Equipment
17%
Falls to Lower Level7%
Falls to Same Level17%
Slips and Trips5%
Overexertion30%
Repetitive Motion2%
Exposure to Harmful Substances
0%
Transporation4%
Fires and Explosions0%
Assaults 4%
All Other14%
2010 Days Away Injuries by Event/Exposure
Overexertion Back – 52%
Shoulders – 18%
Abdomen – 7%
Arms – 5%
Legs – 5%
Repetitive Motion Wrists – 43% Shoulders – 13% Back – 11% Arms – 9% Hands – 5% Fingers – 5%
Ergonomic Injuries – Body Impacts
Costs of Ergonomic Injuries
0 2000 4000 6000 8000 10000
MSDs of the Back
Upper ExtremityMSDs
Average Claim
Average Costs per Claim ($)
Source: Workers’ Compensation data from Insurance Companies 1993
The Bottom Line on Ergonomic Injuries
Liberty Mutual Workplace Safety Index (2012) #1 Cost Driver = Overexertion Injuries $13.6 Billion in Direct Costs to Employers 27% of all Injury Costs
Resource: www.libertymutual.com/researchinstitute
• OSHA can and will cite ergonomic hazards under the “5(a)(1)” General Duty Clause, if:• An ergonomic hazard exists,
• The hazard is recognized,
• The hazard is causing, or likely to cause, a serious injury,
• And if a feasible means exists to reduce the hazard
OSHA and Ergonomics
Benefits of Good Ergonomics
• Increased productivity
• Decreased mistakes/rework
• Increased efficiency
• Decreased injury risk
• Decreased lost work days
• Decreased turnover
• Improved morale
WMSD Risk Factors
Common WMSD Risk Factors
• Force
• Posture
• Frequency
• Duration
• Vibration
• Environment
• Personal Factors
Risk Factors for Injuries
o Forceful Exertionso Weight of load
o Location
o Frequency
o Stability
o Coupling
o Awkward Postureso Bending
o Twisting
o Reaching
Risk Factors for Injuries
o Repetitive Motiono Frequent reaching
o Assembly tasks
o Keying
o Packaging
o Vibrationo Tools
o Mechanized Equipment
Risk Factors for Injuries
o Environmentalo Visual
o 150 Lux in MMH
o Thermalo Increased accidents
away from comfort zoneo Hot: Added metabolic
heat gaino Cold: Decreased blood
flow to extremities
Risk Factors for Injuries
o Environmental, cont.o Worker/Floor Surface Coupling
o Maintain static coefficient of friction of 0.4, preferably 0.5o ANSI A1264.2-2001: Standard for the Provision of Slip Resistance on
Walking/Working Surfaces
o Floor Conditions/Housekeepingo Shoe styleo Floor angleo Surface coatings
Risk Factors for Injuries
o Personal Risk Factorso Gendero Ageo Anthropometryo Lift Techniqueo Attitudeo Strengtho Training
Ergonomics Assessment Tools
Tier I Tools: Tier II ToolsChecklists: Quantitative:Quick Exposure Checklist Job Safety AnalysisWashington State Checklists NIOSH Work Practice Guide to Manual LiftingNIOSH Checklists (97-117) Stover Snook’s Psychophysical Tables for
Rapid Upper Limb Assessment (RULA)Rapid Entire Body Assessment (REBA)Job Strain IndexOccupational Repetitive Action Methods
Awkward Postures - Low work
Bending
KneelingSquatting
These postures are hard on the back and the knees
WISHA Ergonomics Checklist
WISHA Ergonomics Checklist
WISHA Ergonomics Checklist
WISHA Ergonomics Checklist
Elimination
Substitution
Engineering Control
Policies
PPE
Implementing Ergonomic Controls
Effec
tiven
ess
8 Deadly Wastes
Tools, Equipment, Processes
Workstation Design, Mech. Assist
Job Rotation, Rest Breaks, Safe Practices
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Reducing low work
• Raise and/or tilt the work for better access
• Use a stool for ground level work
• Use tools with longer handles
• Alternate between bending, kneeling, sitting, and squatting
Ergonomics at Work Reducing low work
Raise and tilt the work
Ergonomics at Work Reducing low work
Raise the work
Ergonomics at Work Reducing low work
Meter reader – golf club handle extension
Awkward Postures High work
This posture is hard on the shoulders, neck and back
Reducing high work
• Use an elevated work platform or rolling stairs
• Use tools with longer handles
• Limit overhead storage to infrequently used items
• Bring the work down and tilt for easier access
Use a tool with longer handles
Ergonomics at Work Reducing high work
WISHA Ergonomics Checklist
Hands and Wrists:• Pinch Grip
• Grasp Grip
• Repetitive Motion of Hands
• Keying
• Hand Impacts
• Hand and Arm Vibrations
Neck and Shoulders• Neck Posture
What are some of the symptoms of WMSDs?
Report symptoms if:
• Pain is persistent, severe or worsening
• Pain radiates
• Symptoms include numbness or tingling
• Symptoms keep you from sleeping at night
• Discomfort • Burning• Pain • Swelling• Numbness • Change in color• Tingling • Tightness, loss of flexibility
Why is it important to encourage reporting of symptoms?
• Minor injuries can easily become chronic injuries• Injured workers, absenteeism, turnover, insurance
costs
• Can lead to surgery and disability
• Early treatment is more successful
Ergonomics and Temporary Workers
1. Ergonomics Awareness Training2. Risk Assessment3. Solution Development and
Implementationa. Engineering Controlsb. Job rotation, rest breaks, safe
practices4. On-the-job training5. Hazard or near-miss reporting6. Injury reporting and recordkeeping