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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Family Law & Divorce Ontario » Child Custody & Support Ontario » How to Impute Income to a Parent Intentionally Working Part-Time at Minimum Wage in Ontario

How to Impute Income to a Parent Intentionally Working Part-Time at Minimum Wage in Ontario

27 Jun 2026 5 min read No comments Child Custody & Support Ontario
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If your ex is intentionally working part-time or at minimum wage to avoid paying child support, an Ontario family court can “impute” their income. This means a judge calculates support based on what they *should* be earning. To do this, you must file a motion at the Superior Court of Justice, which has a $0 CAD filing fee under Ontario family law for claims solely concerning child support (or $214 CAD if combined with property claims).

Fighting Intentional Underemployment in Ontario

One of the most frustrating scenarios in family law is watching a highly capable ex-partner suddenly quit their lucrative career to flip burgers just as a separation begins. Child support is the right of the child, and parents have a strict legal obligation to support their children to the best of their financial ability. You cannot simply choose voluntary poverty to escape your responsibilities. 📍

Under Section 19 of the Federal Child Support Guidelines, Ontario judges have the power to impute income. This means if a parent with a master’s degree and a history of earning $100,000 a year suddenly takes a minimum-wage retail job, the court can legally pretend they are still making $100,000. Whether you are litigating in Toronto, Kitchener, or Vaughan, holding an underemployed parent accountable requires gathering solid evidence of their true earning capacity. 📝

Step-by-Step Process for Imputing Income

Proving that someone is intentionally dodging work is a complex legal hurdle. You cannot just assume they are lazy; you must prove to the court that they are deliberately under-utilizing their skills without a valid excuse. 💼

Step 1: Gathering Evidence of Past Earnings

The first step is proving what the payor used to make. Your law firm will demand three to five years of CRA Notices of Assessment, T4 slips, and previous employment contracts. This establishes a baseline “earning capacity” that the court will use as a reference point for what they are actually capable of bringing home. 💸

Step 2: Serving a Request for Information

If your ex claims they cannot find work in their field, you must test that claim. Your lawyer will serve a formal Request for Information asking for proof of their job hunt. This includes demanding copies of every resume they sent out, rejection emails, and records of interviews attended. If they produce nothing, it strongly supports your case for intentional underemployment. 📋

Step 3: Retaining a Vocational Expert (Optional)

In high-stakes cases, you may need to hire an independent vocational assessor. This expert will analyze your ex’s education, skills, and the current local job market to write a formal report stating exactly how much someone with their qualifications should be earning in Ontario right now. 🔍

Step 4: Filing a Motion at the Superior Court

With your evidence gathered, your lawyer will file an Application or a Motion to Change at the Superior Court of Justice. You will swear an affidavit outlining the sudden drop in income immediately following the separation, asking the judge to exercise their discretion under Section 19 to impute an appropriate salary. ⚔

Step 5: Attending the Hearing and Enforcing the Order

At the hearing, the judge will evaluate whether the payor has a legitimate reason for working part-time (such as a severe medical issue or retraining). If the judge agrees they are dodging support, they will issue an order imputing their income. This order is then sent to the Family Responsibility Office (FRO), which will enforce the higher support amount, even if it forces the payor into arrears. 🏆

How Much Does it Cost in Ontario?

Litigating an imputation case requires an upfront financial investment to secure the long-term support your child deserves. Often, the threat of an expensive trial is enough to make the other parent settle. 💵

Expense TypeDescriptionEstimated Cost (CAD)
Court Filing FeesIssuing the motion at the Superior Court of Justice (solely for child support).$0 ($214 if combined with property claims)
Lawyer FeesDrafting affidavits, reviewing disclosure, and arguing the motion.$3,500 – $7,500+
Vocational Expert ReportHiring an employment expert to prove earning capacity.$1,500 – $4,000
Cost AwardsIf you win, the judge may order the ex to pay part of your legal fees.Varies

Remember that imputing income can also affect the proportional sharing of Section 7 special expenses (like daycare or sports), meaning your ex will have to pay a much larger share of those bills as well.

How Long Does the Process Take?

Forcing the court to recognize hidden or dodged income is not an overnight fix. Demanding the initial financial disclosure and obtaining a vocational assessment typically takes 2 to 4 months. ⏱

Once the formal motion is filed at the courthouse, navigating the mandatory case conferences and securing a date for an oral hearing or trial usually takes 8 to 14 months. Fortunately, judges often make child support orders retroactive, meaning your ex will owe back-pay for the months they spent hiding at a minimum-wage job.

Frequently Asked Questions (FAQ)

What if they quit their job to go back to school?

Going back to school is not an automatic excuse to stop paying support. Ontario courts will look at whether the retraining is reasonable and will genuinely lead to higher future income that benefits the child. If they quit a lucrative career to study something with no job prospects, the court will likely impute income.

Can income be imputed if they are on disability or sick leave?

Generally, no. If a parent has a valid medical reason verified by a doctor for being unable to work, the court will not impute income. They cannot be punished for a genuine illness or disability that reduces their earning capacity.

What if they are self-employed and hiding cash income?

This is very common. Under Section 19, the court can also impute income if it determines a parent is hiding cash, running personal expenses through their corporation, or artificially keeping their declared income low. You will likely need to hire a forensic accountant to trace the funds.

Does the Family Responsibility Office (FRO) impute income?

No. The FRO is purely an enforcement agency; they cannot change or calculate support amounts. Only a judge at the Ontario family court can legally impute income and issue the new court order that the FRO will enforce.

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