The fatal four most common workplace accidents and how to avoid them

Injuries and fatalities in the workplace remain a serious concern for governments, organizations and the families of workers in safety-sensitive industries. In 2016, nearly 5,200 fatal workplace injuries were reported in the United States and more than 900 in Canada.

Unfortunately, the rate of serious workplace accidents is not declining as quickly as regulators such as the Occupational Safety and Health Administration (OSHA) would like to see.

As a result, many industries face increasingly strict safety regulations. Organizations are legally required to train employees, implement safety programs and demonstrate compliance.

Fortunately, the most common construction workplace accidents—referred to as the “fatal four” by OSHA—are largely preventable when proper training and safety precautions are in place.

This article explains the fatal four hazards and outlines practical steps organizations can take to reduce workplace risk.

Understanding the fatal four workplace hazards 

The fatal four refers to the four leading causes of serious injuries and fatalities on construction sites.

Understanding these hazards helps organizations identify risks and implement preventive measures.

Slip, trip and fall hazards 

Slips, trips and falls are the leading cause of workplace injuries and fatalities. These types of incidents are unfortunately common but are often preventable.

Organizations can reduce the risk of slips, trips and falls by implementing measures such as:

• Good housekeeping to ensure worksites remain dry, clean and free of debris
• Modified flooring with abrasive coatings to improve traction in slippery areas
• Requirements for employees to wear industry-approved footwear

Worksites involving roofing, scaffolding, construction and other height-related hazards should always follow safety protocols related to harnesses, guardrails and other protective systems.

Struck-by hazards 

OSHA estimates that approximately 10 percent of occupational fatalities occur because of struck-by incidents.

These accidents occur when workers are hit by moving objects, equipment or materials.

Using proper personal protective equipment (PPE)—such as face shields, reflective vests and hard hats—can help reduce risk.

Training workers to recognize struck-by hazards is also critical. Employees should avoid standing beneath moving loads, inspect rigging before lifting and store materials securely.

Electrocution hazards 

Overhead power lines, exposed live wires and electrical currents from power tools or machinery are common causes of electrocution incidents.

Electrocution is the third leading cause of workplace fatalities on construction sites.

In addition to severe electrical burns, electrocution incidents can lead to falls, brain injuries and other life-threatening conditions.

Training is one of the most effective ways to prevent electrical accidents.

Employees should be trained to:

• Shut off electrical currents before inspecting or repairing equipment
• Properly maintain electrical tools and equipment
• Use appropriate protective equipment and circuit protection devices
• Exercise caution when working near live wires or power lines

Electrical safety standards should be integrated into workplace health and safety policies, and training should be conducted regularly.

Caught-in or caught-between hazards 

Caught-in hazards occur when workers become trapped between equipment, materials or machinery.

These accidents often occur around heavy equipment, when safety guards are removed from tools or when clothing or jewelry becomes caught in moving parts.

Employees can reduce these risks by following basic safety practices:

• Never position themselves between heavy materials and an immovable structure
• Exercise caution when lifting or storing materials
• Avoid using equipment without safety guards
• Avoid wearing loose clothing, jewelry or materials when operating machinery
• Follow proper safety procedures when working in trenches or excavations

Each worksite and piece of equipment should be assessed for potential caught-in hazards.

Awareness, training and consistent safety leadership remain the most effective ways to prevent these incidents.

Why investing in workplace safety matters 

Health and safety initiatives are sometimes viewed as costly or disruptive to operations. As a result, some organizations delay investing in safety programs and supporting technologies until an incident occurs. 

However, the financial and social costs of workplace accidents can be significant. A work-related injury can affect an employee’s quality of life, disrupt operations and damage an organization’s reputation. Investing in proactive safety programs helps organizations protect workers while reducing long-term operational and financial risk.