How Exhaustion Leads to Accidents: Fatigue Management for OH&S

Summary

Long shifts, high-pressure jobs, and tight deadlines—welcome to high-risk industries like construction, oil & gas, transportation, and manufacturing. While these jobs keep Calgary’s economy running, they also come with a hidden danger: fatigue.

Fatigue might sound like a minor issue, but it’s actually a leading cause of workplace accidents, injuries, and even fatalities. Workers operating heavy machinery, driving long-haul trucks, or working at heights can’t afford to be drowsy—but without the right fatigue management strategies, exhaustion can hit hard.

At Calgary Safety Consultants, we help businesses recognize fatigue hazards, implement control measures, and stay OH&S compliant to keep workers safe, alert, and productive.

Let’s dive into how fatigue affects safety, productivity, and your bottom line—and what you can do about it.

What is Workplace Fatigue? And Why is it Dangerous?

Fatigue is more than just being tired—it’s a state of mental and physical exhaustion that reduces a worker’s ability to function safely.

Key causes of workplace fatigue include:

  • Long shifts & extended work hours (common in construction, oil & gas, and healthcare)
  • Night shifts & rotating schedules (disrupting natural sleep cycles)
  • Monotonous or repetitive work (leading to mental fatigue)
  • Physically demanding tasks (increasing exhaustion faster)
  • High-stress environments (causing mental burnout)

Fatigue & Workplace Safety Research: https://www.ccohs.ca/oshanswers/psychosocial/fatigue.html


How Does Fatigue Lead to Workplace Accidents?

A fatigued worker is a dangerous worker. Studies show that being awake for 17+ hours has the same effect on reaction time as a 0.05% blood alcohol level—after 20+ hours, it’s equal to 0.08% BAC (legally impaired driving level)!

Top Fatigue-Related Workplace Risks:

Transportation & Trucking

  • Drowsy driving accidents leading to crashes & fatalities
  • Reduced reaction times when making split-second decisions
  • Lane drifting & slowed braking response

Commercial Driver Fatigue Regulations: https://tc.canada.ca/en/road-transportation/driver-fatigue-management


Construction & Oil & Gas

  • Increased risk of falls & equipment mishandling
  • More frequent errors when operating heavy machinery
  • Delayed emergency responses in hazardous conditions

Fatigue Risks in Oil & Gas: https://www.ohscanada.com/fatigue-in-the-oil-and-gas-industry/


Manufacturing & Industrial Work

  • Lack of concentration leading to improper use of tools & machinery
  • Higher risk of repetitive strain injuries due to reduced awareness
  • Poor decision-making under fatigue-related stress

Manufacturing Fatigue Risks: https://www.ccohs.ca/oshanswers/ergonomics/standing_fatigue.html


How Businesses Can Manage Workplace Fatigue

1. Create Fatigue Management Policies

  • Set maximum shift hours and ensure proper rest periods.
  • Limit overtime for safety-sensitive roles.
  • Encourage self-reporting of fatigue without fear of penalties.

Fatigue Policy Development Guide: https://www.worksafebc.com/en/resources/health-safety/health-safety-manuals/fatigue-management-guide


2. Implement Work-Rest Schedules

  • Use the “2-hour rule”—workers should take short breaks every 2 hours for high-concentration tasks.
  • Rotate night shift workers regularly to avoid chronic fatigue buildup.
  • Provide longer breaks for physically demanding jobs.

Work-Shift Best Practices: https://www.ccohs.ca/oshanswers/psychosocial/fatigue_shiftwork.html


3. Monitor Fatigue with Wearable Tech & Safety Systems

  • Use alertness monitoring technology (e.g., fatigue detection cameras in trucks).
  • Introduce wearable fatigue trackers for high-risk workers.
  • Encourage the use of self-assessment fatigue checklists before shifts.

Fatigue Monitoring Technology: https://www.niosh.gov/ohs-monitoring-tech


4. Educate & Train Employees on Fatigue Awareness

  • Teach workers how to recognize fatigue symptoms in themselves & co-workers.
  • Offer sleep hygiene training to improve rest quality outside of work.
  • Train managers to identify and intervene in fatigue-related risks.

Fatigue Training Programs: https://www.fatiguekit.com/

How Calgary Safety Consultants Can Help

At Calgary Safety Consultants, we specialize in helping businesses manage workplace fatigue risks and stay OH&S compliant.

We Offer:

Fatigue Management Training for employees & supervisors
Shift Scheduling & Work-Rest Policy Development
Fatigue Risk Assessments for High-Risk Jobs
Custom Safety Programs to reduce fatigue-related accidents

Final Thoughts: Fatigue is a Workplace Hazard—Treat it Like One!

Fatigue isn’t simply a matter of feeling tired—it’s a serious and often underestimated workplace hazard that can lead to devastating consequences. Physically and mentally, fatigue affects reaction time, decision-making, memory, coordination, and focus. In high-risk industries such as construction, manufacturing, transportation, and energy, these impairments can be the difference between a normal shift and a life-threatening incident. The data is sobering: fatigue is a contributing factor in countless injuries and fatalities across Canadian worksites each year.

Beyond the human toll, fatigue also has a significant financial impact on businesses. Reduced alertness and concentration lead to mistakes, delays, equipment damage, and increased absenteeism. According to national and international studies, fatigue-related incidents cost employers millions of dollars annually in medical costs, downtime, workers' compensation claims, and lost productivity.

Fortunately, these outcomes are preventable. By implementing structured and proactive fatigue management strategies, Calgary businesses can significantly reduce risk and create safer, more productive work environments. These strategies may include scheduling practices that allow for adequate rest, education on sleep hygiene, monitoring of overtime hours, regular wellness check-ins, and clear protocols for recognizing and responding to signs of fatigue in the workplace.

Ready to see the impact on your bottom line? Contact Calgary Safety Consultants for your complimentary consult to explore tailored OH&S solutions that drive real financial results. 

Stay safe, stay compliant, and keep your business running smoothly!

FAQs on How Exhaustion Leads to Accidents: Fatigue Management for OH&S

Fatigue affects reaction times, decision-making, and concentration, leading to increased workplace accidents, injuries, and costly mistakes—especially in high-risk industries like construction, oil & gas, and transportation.

•    Long shifts & excessive overtime
•    Night shifts & disrupted sleep cycles
•    Physically demanding work
•    Monotonous tasks that cause mental exhaustion

  • Slow reaction times & poor coordination
  • Increased mistakes & difficulty concentrating
  • Irritability & mood swings
  • Falling asleep or "micro-sleeping" on the job

Secure Your Workplace Safety Today

Calgary Safety Consultants is here to help you ensure compliance, enhance safety, and streamline your OH&S program. Don’t wait—fill out the form, and we’ll connect with you to discuss how we can support your business. Let’s get started!