What is professional liability insurance (E&O)?

Professional liability insurance, commonly known as errors and omissions (E&O), protects businesses against client claims of mistakes in the professional services they provide. It covers legal fees, settlements and damages when a client alleges negligence, misrepresentation or failure to deliver work as promised.

Unlike general liability insurance, which protects against physical injuries or property damage, E&O focuses on financial harm resulting from professional advice, services or work performance. Industries that often rely on professional liability insurance include:

• Technology firms developing software or apps
• Accountants, consultants and financial advisors
• Healthcare providers and clinics
• Architects, engineers and design firms
• Marketing agencies and media companies

Why employers may need E&O coverage

Lawsuits are not limited to big corporations. Small and mid-sized businesses can face the same costly risks. Without coverage, you risk draining business resources or even shutting down operations after a single claim. Professional liability insurance gives employers protection by helping to:

Protect against costly lawsuits

Even when your business adheres to all regulations and delivers high-quality work, disputes can still arise. Defending against a client claim without insurance can easily result in tens or even hundreds of thousands of dollars in legal fees alone. E&O coverage ensures your company has the resources to handle these situations without jeopardizing operations or cash flow.

Safeguard your reputation

A claim, even one that lacks merit, can damage your business reputation. Professional liability insurance covers legal defences and settlements, helping maintain your credibility with clients, partners and the public. This protection allows you to focus on your work while the insurer manages the legal complexities.

Meet client requirements

Many clients, particularly those in corporate or regulated sectors, require vendors and service providers to carry professional liability insurance before they sign contracts. Having E&O coverage in place demonstrates professionalism and readiness, ensuring you don’t lose business opportunities due to missing documentation.

Support hiring and retention

Employees want to work for businesses that plan ahead and prioritize their team’s wellbeing. Offering professional liability insurance shows your commitment to stability and risk management, which can help attract skilled professionals and encourage long-term retention.

Main coverage areas of professional liability insurance

This type of insurance can protect you when clients feel your work didn’t meet expectations. Every policy varies, but most professional liability insurance plans include:

• Errors and omissions: Mistakes in work that cause financial harm.
  • Example: An accountant miscalculates a client’s tax return, leading to a $10,000 penalty from the Canada Revenue Agency (CRA).
• Negligence claims: Failure to meet expected professional standards.
  • Example: A contractor installs wiring that does not meet code, resulting in property damage to a client and a subsequent lawsuit.
• Breach of contract: Not delivering services within the terms agreed upon.
  • Example: A marketing consultant promises to launch a campaign by a specific date but fails to meet the deadline, resulting in lost revenue for the client.
• Misrepresentation: Providing inaccurate advice or information that harms a client.
  • Example: A financial advisor recommends an investment labelled as “low risk,” which ultimately results in the client losing a significant portion of their portfolio.
• Defence costs: Legal fees, settlements and judgments related to covered claims.
  • Example: A business is sued for alleged professional errors, and the insurance covers the $50,000 legal defence fees and any settlement costs.

What professional liability insurance does not cover

Knowing the limits of your coverage ensures you don’t leave gaps in your risk management strategy. Policies generally exclude:

• Intentional misconduct or fraud
• Property damage or bodily injury (covered under general liability insurance)
• Employment issues like harassment or wrongful termination (covered under employment practices liability insurance, or EPLI)
• Cybersecurity breaches, unless you purchase cyber liability coverage

Professional liability insurance vs. other business insurance

Many employers assume their existing insurance policies are enough, but each type covers different risks:

General liability insurance

This policy protects your company against claims if someone is hurt on your property or if you accidentally damage someone else’s property. It does not cover mistakes in the professional services you provide, so it will not help if a client encounters financial harm due to your advice or work.

Employment practices liability insurance (EPLI)

EPLI protects your business against employee-related claims. That includes allegations of discrimination, harassment, wrongful termination or retaliation. It ensures you have legal and financial support if an employment dispute arises, which professional liability insurance does not cover.

Cyber liability insurance

Cyber policies protect against digital risks, such as data breaches, hacking incidents or ransomware attacks. Errors and omissions insurance typically does not cover cyber threats because it focuses on professional service mistakes. A separate cyber liability policy is essential for businesses that handle sensitive data.

How much does E&O insurance cost?

Premiums vary depending on the type of business, its size and claims history:

• Industry: High-risk industries, such as financial services or healthcare, may pay more.
• Business size: Larger workforces and higher revenue generally result in higher premiums.
• Claims history: A history of lawsuits can raise costs.

For small and mid-sized businesses, professional liability insurance can range from $500 to $5,000 per year. While cost is a factor, choosing the least expensive policy may leave your company exposed to risk if coverage limits are too low.

Hiring and business growth angle

Having the right coverage demonstrates stability to clients, reassures employees that you’re ready for the unexpected and keeps your company competitive in fast-moving industries. In practical terms, E&O coverage supports key areas that directly impact your business growth and day-to-day operations:

• Client contracts: Many corporate clients will not sign agreements unless vendors show proof of E&O coverage. Without it, you may miss out on valuable business opportunities.
• Dispute protection: Misunderstandings happen. Insurance offers financial protection for you and your clients.
• Strategic advantage: Showing you carry professional liability insurance signals professionalism and reliability to clients, partners and potential hires.

Common mistakes employers make with E&O coverage

Even when businesses purchase professional liability insurance, they sometimes make mistakes with their policy. Watch out for these mistakes:

• Assuming general liability is enough: It does not protect against professional mistakes.
• Underestimating coverage limits: A $1 million policy may not be sufficient for industries with a higher risk of lawsuits.
• Not updating policies as the business scales: Growth changes risk, so your policy may reflect that.
• Failing to cover contractors: If you have independent contractors working under your brand, ensure your policy includes them.
• Delaying purchase until a contract requires it: Gaps in coverage can leave your business vulnerable.

Professional liability insurance (E&O) is a foundation for trust, growth and stability. For employers and business owners, it provides the confidence that even if mistakes happen, your company can withstand the financial and reputational fallout. When clients, employees and investors know that you have this insurance, it typically signals professionalism and foresight.