12 Aug Cold-Weather Work – JSA

Cold-Weather Work Job Safety Analysis (JSA)

Job / Task

Construction, maintenance, inspection, repair, material handling, equipment operation, and other outdoor or unheated work performed during cold, windy, wet, snowy, or icy conditions.

Purpose

This Job Safety Analysis (JSA), also known as a Job Hazard Analysis (JHA), identifies hazards associated with cold-weather work and establishes safe work practices and controls to prevent cold stress, hypothermia, frostbite, slips and falls, reduced dexterity, equipment-related incidents, and other cold-related injuries.

Personnel Qualifications

Employees and supervisors shall understand the cold-weather hazards associated with their work and the measures required to prevent and respond to cold stress.

Employees shall:

• Recognize signs and symptoms of cold stress, frostbite, and hypothermia and immediately report symptoms in themselves or others.
• Understand the importance of layered clothing, keeping dry, warming breaks, hydration, and adequate nutrition.
• Follow established work/rest or warming schedules and site-specific cold-weather controls.
• Use the buddy system or other observation methods when required by conditions.
• Know how to summon emergency medical assistance and provide the worksite location.
• Inspect walking and working surfaces for snow, ice, and other winter hazards.
• Stop work and seek assistance when cold-related symptoms develop or conditions become unsafe.

Required PPE

PPE and protective clothing shall be selected based on temperature, wind, precipitation, work activity, and other site hazards and may include:

• Layered, weather-appropriate clothing that provides insulation while allowing adjustment as workload changes.
• Water-resistant or waterproof outerwear when exposed to rain, snow, or wet conditions.
• Insulated gloves or mittens appropriate for the task while maintaining necessary dexterity.
• Insulated safety footwear with appropriate toe protection and slip-resistant soles.
• Hard hat with an approved cold-weather liner where head protection is required.
• Safety glasses with side protection.
• High-visibility apparel where vehicles or mobile equipment are present.
• Face, ear, and neck protection appropriate for cold and wind exposure.
• Additional task-specific PPE required by the work activity or site.

Cold-weather clothing shall not interfere with required PPE, equipment controls, visibility, hearing, or safe movement. Wet clothing shall be changed or dried as soon as practical.

JSA – Job Steps, Hazards, and Controls

Step 1 – Evaluate Cold-Weather Conditions Before Work

Potential Hazards

• Low temperature.
• Wind chill.
• Rain, snow, sleet, or freezing rain.
• Wet clothing.
• Extended exposure.
• Employees not accustomed to cold conditions.

Required Controls

• Review expected temperature, wind, precipitation, and duration of exposure before starting work.
• Consider wind chill, workload, clothing, wetness, and availability of heated or sheltered recovery areas.
• Identify employees performing stationary, remote, or prolonged outdoor work who may require additional controls.
• Discuss cold-weather hazards and controls during the pre-task briefing.
• Modify or postpone work when conditions cannot be adequately controlled.

Step 2 – Prepare Warming and Recovery Areas

Potential Hazards

• Inadequate recovery from cold exposure.
• Progressive body cooling.
• Delayed access to shelter.

Required Controls

• Provide access to a warm, dry shelter or heated recovery area when conditions require it.
• Locate warming areas so employees can reach them promptly.
• Provide scheduled and additional warming breaks based on conditions and employee symptoms.
• Keep warming areas free of carbon monoxide and other combustion hazards.
• Do not use unsafe or unapproved heating devices.

Step 3 – Select and Inspect Cold-Weather Clothing

Potential Hazards

• Insufficient insulation.
• Wet clothing.
• Restricted movement or vision.
• Loose clothing caught in equipment.

Required Controls

• Dress in layers so insulation can be adjusted as workload and conditions change.
• Use moisture-managing inner layers and weather-resistant outer layers appropriate for conditions.
• Keep spare dry gloves, socks, or clothing available when prolonged wet exposure is possible.
• Ensure clothing does not create entanglement hazards around rotating or moving equipment.
• Verify required high-visibility and protective equipment remains visible and effective.

Step 4 – Inspect Walking and Working Surfaces

Potential Hazards

• Slips and falls.
• Hidden ice.
• Snow-covered holes or uneven surfaces.
• Poor traction.

Required Controls

• Inspect access routes, stairs, ladders, platforms, work areas, and parking areas before use.
• Remove snow and ice where practical and apply appropriate traction materials when needed.
• Barricade or restrict access to surfaces that cannot be made safe.
• Use handrails and maintain three points of contact when climbing.
• Take shorter, controlled steps on slippery surfaces and avoid rushing.

Step 5 – Begin Work in Cold Conditions

Potential Hazards

• Rapid body cooling.
• Reduced dexterity.
• Muscle stiffness.
• Fatigue.
• Reduced concentration.

Required Controls

• Begin work wearing appropriate layers and adjust clothing before excessive sweating occurs.
• Use mechanical aids or team handling to reduce unnecessary exertion when practical.
• Allow additional time for tasks requiring fine motor control.
• Maintain access to warm, dry recovery areas.
• Monitor conditions and employees throughout the work period.

Step 6 – Monitor Employees for Cold Stress

Potential Hazards

• Hypothermia.
• Frostbite.
• Numbness.
• Confusion.
• Loss of coordination.
• Slurred speech.

Required Controls

• Observe employees for persistent shivering, numbness, pale or waxy skin, unusual fatigue, confusion, poor coordination, slurred speech, or behavioral changes.
• Encourage employees to monitor coworkers for cold-related symptoms.
• Increase observation during severe cold, high winds, wet conditions, or remote work.
• Immediately remove symptomatic employees from continued cold exposure and begin appropriate response procedures.
• Do not allow an employee with significant cold-stress symptoms to continue working.

Step 7 – Perform Manual Work and Material Handling

Potential Hazards

• Reduced grip strength.
• Dropped materials.
• Strains and sprains.
• Cold-contact injury.

Required Controls

• Use gloves that provide insulation while allowing adequate grip and dexterity.
• Use mechanical handling aids whenever practical.
• Use team lifting for heavy, awkward, or slippery materials.
• Avoid prolonged bare-skin contact with cold metal or other cold surfaces.
• Warm hands and muscles periodically to maintain safe control.

Step 8 – Use Hand and Power Tools

Potential Hazards

• Reduced dexterity.
• Poor grip.
• Tool kickback or loss of control.
• Cold or brittle components.
• Glove entanglement.

Required Controls

• Inspect tools before use for cold-related damage, ice, moisture, or other defects.
• Keep handles dry and free of ice.
• Use gloves compatible with the tool and task.
• Allow additional time for precise work when dexterity is reduced.
• Keep loose clothing and gloves away from rotating parts.
• Stop work if numbness or reduced control prevents safe tool operation.

Step 9 – Operate Vehicles and Mobile Equipment

Potential Hazards

• Icy surfaces.
• Skidding.
• Reduced visibility.
• Longer stopping distance.
• Frozen controls or components.

Required Controls

• Perform required pre-use inspections and remove snow and ice from windows, mirrors, lights, steps, and access points.
• Allow equipment to warm as required by manufacturer instructions.
• Reduce speed and increase following distance for conditions.
• Avoid sudden steering, braking, or acceleration on slippery surfaces.
• Use spotters when snow, fog, darkness, or other conditions reduce visibility.
• Do not operate equipment when traction or visibility cannot be maintained safely.

Step 10 – Work Around Snow and Ice Accumulation

Potential Hazards

• Falling snow or ice.
• Structural loading.
• Hidden hazards.
• Blocked exits or emergency equipment.

Required Controls

• Keep employees clear of areas where accumulated snow or ice may fall from roofs, structures, vehicles, or equipment.
• Do not work beneath unstable ice or snow accumulation.
• Keep exits, stairs, fire protection equipment, and emergency routes clear.
• Remove accumulation using safe methods and appropriate equipment.
• Have structures evaluated when snow or ice loading may affect stability.

Step 11 – Work in Windy Conditions

Potential Hazards

• Increased wind chill.
• Rapid heat loss.
• Flying materials.
• Reduced balance.
• Falling objects.

Required Controls

• Account for wind chill when evaluating cold exposure.
• Provide windbreaks or sheltered work locations where practical.
• Secure loose tools, materials, covers, and temporary installations.
• Increase warming frequency as wind chill becomes more severe.
• Suspend elevated or exposed work when wind creates an additional uncontrolled hazard.

Step 12 – Work in Wet Cold Conditions

Potential Hazards

• Rapid body heat loss.
• Wet clothing.
• Hypothermia.
• Slips and falls.

Required Controls

• Use waterproof or water-resistant outer layers appropriate for the task.
• Keep clothing and footwear as dry as practical.
• Replace wet gloves, socks, or clothing promptly.
• Provide additional warming and drying opportunities.
• Prevent standing water from freezing on walking and working surfaces where practical.

Step 13 – Use Temporary Heaters

Potential Hazards

• Fire.
• Carbon monoxide exposure.
• Burns.
• Fuel hazards.
• Oxygen depletion.

Required Controls

• Use only approved heaters suitable for the location and follow manufacturer instructions.
• Maintain required clearances from combustible materials.
• Provide ventilation appropriate to the heater and work area.
• Do not use fuel-burning equipment in enclosed or poorly ventilated areas unless atmospheric hazards are adequately controlled.
• Inspect hoses, fuel connections, cords, and heaters before use.
• Keep fire extinguishing equipment available as required.

Step 14 – Recognize and Respond to Frostbite

Potential Hazards

• Tissue damage.
• Numbness.
• Pale, waxy, or hardened skin.
• Loss of sensation.

Required Controls

• Move the employee to a warm, protected area and obtain medical evaluation as appropriate.
• Protect the affected area from further cold exposure and trauma.
• Do not rub or massage suspected frostbitten tissue.
• Do not use direct high heat such as open flames, heating pads, or very hot water.
• Do not allow refreezing after thawing.
• Follow emergency medical guidance.

Step 15 – Recognize and Respond to Hypothermia

Potential Hazards

• Life-threatening drop in body temperature.
• Confusion.
• Loss of coordination.
• Reduced consciousness.
• Cardiac complications.

Required Controls

• Treat suspected moderate or severe hypothermia as a medical emergency.
• Call emergency medical services when symptoms are significant or worsening.
• Move the employee to a warm, dry, sheltered location.
• Remove wet clothing when practical and replace it with dry insulation or blankets.
• Warm the employee gradually, focusing on the torso, and handle the person gently.
• Do not leave the employee alone.
• Do not give food or drink to an employee who is confused, drowsy, unconscious, or unable to swallow safely.

Step 16 – Complete Work and Recover

Potential Hazards

• Residual cold stress.
• Fatigue.
• Delayed symptoms.
• Wet clothing during travel.

Required Controls

• Allow adequate warming and recovery after significant cold exposure.
• Change wet clothing before prolonged travel or additional exposure when practical.
• Report cold-related symptoms that develop during or after the task.
• Do not assign additional cold-exposed or strenuous work to an employee who has not adequately recovered.
• Evaluate cold-related incidents or symptoms to determine whether controls need improvement.

General Safe Work Requirements

• Cold exposure shall be evaluated based on temperature, wind chill, wetness, workload, duration, clothing, and availability of warming areas.
• Employees shall wear appropriate layered clothing and keep clothing as dry as practical.
• Warm, dry recovery areas and warming breaks shall be provided when conditions require them.
• Employees shall be monitored for signs and symptoms of frostbite, hypothermia, and other cold stress.
• Walking and working surfaces shall be inspected and controlled for snow and ice hazards.
• Vehicle and equipment speeds shall be reduced when snow, ice, or visibility conditions require it.
• Temporary heaters shall be used in accordance with manufacturer instructions and applicable fire and ventilation requirements.
• Employees showing signs of cold stress shall be removed from exposure and evaluated promptly.
• Employees shall not work alone in severe cold or remote conditions when prompt assistance cannot otherwise be assured.
• Work shall be modified, suspended, or rescheduled when cold-weather hazards cannot be adequately controlled.

Training

Employees and supervisors shall receive cold-weather training appropriate to their work. Training shall include cold-stress risk factors, wind chill, proper clothing and layering, keeping dry, warming practices, snow and ice hazards, safe use of temporary heaters, signs and symptoms of frostbite and hypothermia, emergency response, communication procedures, and stop-work expectations.

References

• OSHA – Winter Weather safety guidance and applicable General Duty Clause requirements.
• OSHA 29 CFR 1926.21 – Safety Training and Education.
• OSHA 29 CFR 1926.51 – Sanitation, where applicable.
• OSHA 29 CFR 1926.154 – Temporary Heating Devices.
• NIOSH – Cold Stress workplace safety guidance.
• Applicable manufacturer instructions and site-specific cold-weather or emergency procedures.