Directors' Liability in Ontario Corporations

One of the most common reasons people incorporate is to limit personal exposure. Shareholders generally enjoy that protection: if a corporation goes under, creditors cannot usually reach a shareholder's personal bank account or home. But director liability in Ontario tells a different story. Directors — the people who govern a corporation and make decisions on its behalf — face a set of personal obligations that survive even when the corporation cannot pay its debts.

If you are a founder, small-business owner, or investor who sits on a board (or is about to), understanding where those obligations come from and how to manage them is one of the most practical things you can do before something goes wrong.

The Corporate Veil — and Why It Doesn't Protect Directors the Way It Protects Shareholders

"Piercing the corporate veil" is the legal concept of looking past a corporation's separate legal identity to hold individuals personally responsible. Courts pierce the veil reluctantly, usually when a corporation is being used to commit fraud or when it is simply an alter-ego with no real independent existence.

Directors do not need a court to pierce the veil against them. Parliament and the Ontario Legislature have already done it — through statutes that directly attach personal liability to specific categories of unpaid obligations. These are not rare edge cases. They apply to ordinary, well-run businesses that simply run out of money.

Where Directors Can Be Held Personally Liable

Unpaid Employee Wages and Vacation Pay

Under Ontario's Business Corporations Act (OBCA) and the Employment Standards Act (ESA), directors can be held personally liable for up to six months of unpaid wages and vacation pay owed to employees, if the corporation itself cannot pay. "Wages" in this context covers more than regular pay — it includes commissions and other remuneration that employees have earned.

This is a joint and several obligation, meaning each director can be pursued for the full amount, not just their proportionate share. An employee (or the Ministry of Labour, Immigration, Training and Skills Development) can bring a claim against directors without first exhausting remedies against the corporation, though the corporation must generally be shown to be unable to pay.

Source Deductions (CPP, EI, Income Tax)

Every time a corporation runs payroll, it deducts Canada Pension Plan contributions, Employment Insurance premiums, and income tax from employees' cheques. Those amounts must be remitted to the Canada Revenue Agency (CRA) on a set schedule. They belong to the employees and the government — the corporation is simply a conduit.

Under the Income Tax Act and related legislation, if a corporation fails to remit source deductions, the CRA can assess each director personally for the unremitted amounts, plus interest and penalties. This is known as a strict liability area: you can be assessed even if you were not directly involved in the payroll decision. The only real defence is due diligence (discussed below).

HST/GST

The same logic applies to unremitted Harmonized Sales Tax (HST) or Goods and Services Tax (GST). The corporation collects HST/GST from customers on behalf of the government. If it fails to remit those amounts, the CRA may assess directors personally. Again, this is strict liability territory, and the due diligence defence is the primary way to push back.

Environmental Obligations

Ontario's Environmental Protection Act extends personal liability to directors and officers who authorize, permit, or acquiesce in a corporation's environmental violations. This is not limited to companies in obviously "polluting" industries — it can apply to any business that improperly disposes of materials or contaminates a property. Because environmental clean-up costs can be enormous, this category of liability deserves serious attention even when the risk seems remote.

The Oppression Remedy

Ontario's OBCA gives shareholders, creditors, and others the right to apply to court when the corporation's affairs are being conducted in a way that is unfairly prejudicial to their interests — this is called the oppression remedy. Courts have broad discretion to fashion a remedy, and that can include making directors personally responsible for amounts owed. Oppression claims often arise in closely-held corporations where a controlling director takes actions that harm minority shareholders or creditors.

Directors' Duties: The Legal Framework

Two fundamental duties govern how a director must act:

1. Fiduciary duty — A director must act honestly and in good faith, with a view to the best interests of the corporation (not just the majority shareholder, not themselves). Conflicts of interest must be disclosed and managed. Self-dealing transactions require board approval.

2. Duty of care — A director must act with the care, diligence, and skill that a reasonably prudent person would exercise in comparable circumstances. In practice, this means staying informed, attending meetings, reviewing financial statements, and asking hard questions when something looks wrong.

These duties are owed to the corporation, but breaching them can expose directors to derivative claims and, in oppression cases, to personal liability.

The Due Diligence Defence

For source deductions and HST/GST assessments, the due diligence defence is a director's most important shield. To succeed, a director must show they took all reasonable steps to prevent the failure to remit — not just that they were unaware of it.

In practice, courts look at things like:

• Whether the director monitored the corporation's financial health and remittance schedule
• Whether they raised concerns with management or co-directors when problems emerged
• Whether they sought professional advice and acted on it
• Whether they resigned when it became clear the problems could not be fixed

Importantly, resignation alone does not automatically eliminate liability for obligations that arose before the resignation. There are time limits on when the CRA can assess a director (generally two years after the director leaves office, as of writing — verify current rules with a lawyer), but a director who resigns in the face of mounting arrears still faces exposure for obligations that predate their departure.

How Directors Protect Themselves

Directors' and Officers' (D&O) Insurance

D&O insurance covers directors and officers for claims made against them personally arising from their management decisions. It typically covers legal defence costs and any damages awarded, subject to exclusions (fraud and deliberate wrongdoing are almost always excluded). For any corporation with outside directors or significant assets, D&O coverage is a standard risk-management tool.

Indemnification by the Corporation

The OBCA permits a corporation to indemnify its directors against costs and liabilities incurred in connection with their role — provided the director acted honestly and in good faith. This protection is usually set out in the corporation's by-laws or a separate director indemnity agreement. It is only as valuable as the corporation's ability to pay, which is why D&O insurance matters alongside indemnification.

Resigning When the Corporation Is in Distress

Resignation can stop the clock on future liability, but it requires careful timing. A director who resigns the moment payroll remittances fall behind may succeed in cutting off liability for future periods. A director who stays on hoping things improve — while arrears accumulate — faces mounting personal exposure. Getting legal advice before resigning (and documenting the resignation properly) is important.

Staying Informed — The Paper Trail

The due diligence defence is built on evidence. Directors who attend meetings, review financials, ask questions, and document their concerns in writing are in a far better position than those who show up occasionally and rubber-stamp management decisions. Board minutes, email exchanges, and written requests for financial information all become evidence in a CRA audit or lawsuit.

Unanimous Shareholder Agreements

Under the OBCA, a unanimous shareholder agreement (USA) can restrict or remove the powers of directors and transfer those powers to shareholders. When that happens, the shareholders who receive those powers also take on the corresponding liabilities. This is a significant structural tool in closely-held corporations — it lets shareholders control the business directly while understanding the liability consequences of doing so.

Who Should Think Carefully Before Accepting a Director Role

Not everyone who sits on a board fully appreciates what they are agreeing to. The following people should get legal advice before accepting a director appointment:

• Nominee directors — people added to the board as a favour, to satisfy a legal requirement, or to give a corporation a "local" face, without real authority or information
• Passive investors taking a board seat — a board seat is not just a governance formality; it comes with personal obligations
• Family members added for convenience — spouses, parents, or adult children who appear on the articles without participating in the business face the same statutory liability as any other director
• Silent partners — if you have investor-level involvement but are listed as a director, you carry director-level risk

Frequently asked questions