Working while on claim
EI does not require you to sit idle while you look for full-time work — in fact, part-time work is encouraged, because it keeps you attached to the labour market. The rule is a partial deduction, not a dollar-for-dollar clawback: for each dollar you earn while claiming, 50 cents is deducted from your benefit, until your earnings reach 90% of your weekly earnings (the earnings your benefit was based on). Above that 90% threshold, earnings are deducted dollar-for-dollar. And if you work a full week, you receive no benefit for that week at all.
Two reporting rules matter as much as the formula. First, you report earnings in the week you work them, not the week you are paid — so a paycheque that arrives late still counts in the week the work was done. Second, you must report all earnings, including self-employment income and earnings from a job you started while claiming, even if the amount seems too small to matter. Unreported earnings are the most common cause of EI overpayments.
- Deduction: 50 cents per dollar earned, up to 90% of your weekly earnings; dollar-for-dollar above 90%.
- A full week of work means no benefit for that week — but that week does not consume a week of entitlement.
- Report earnings in the week you worked them, not the week you were paid.
- Failing to report earnings creates an overpayment you must repay, and can lead to penalties and a higher hours requirement on future claims.

Worked examples
| Your weekly benefit | Your weekly earnings (90% threshold) | Earnings in the week | Deduction | Benefit paid |
|---|---|---|---|---|
| $550 | — | $200 | $100 (50 cents per dollar) | $450 |
| $550 | $900 (weekly earnings $1,000) | $800 | $400 (still under 90%) | $150 |
| $550 | $900 (weekly earnings $1,000) | $1,000 | $450 + $100 dollar-for-dollar = $550 | $0 |
The third row shows the threshold at work: the first $900 of earnings cost $450 of benefit (50 cents per dollar), and the remaining $100 of earnings cost the last $100 of benefit dollar-for-dollar, leaving nothing payable that week. Note that the 90% threshold is 90% of your weekly earnings — the earnings figure your benefit was calculated from — not 90% of your benefit. Confusing those two is the most common arithmetic mistake claimants make with this rule.

What counts, and what does not use up entitlement
Almost all earnings count: wages, salary, commissions, and net self-employment income earned while claiming. Some payments do not count as earnings for this rule — for example, a pension, or a disability payment that is not tied to work you did while claiming — but the list of exceptions is narrow, and you should report the payment and let Service Canada decide rather than assuming it is exempt. Earnings from a job you held before your claim (for example, a second part-time job you kept) count the same way as earnings from a new job.
A week in which you work full-time and receive no benefit does not consume a week of entitlement — it consumes calendar time in your 52-week benefit period, but your weeks of benefits remain for later weeks. The same is true of weeks when you are unavailable or outside Canada. That is why the benefit period matters: you can stretch a claim across the full year, but you cannot stretch it beyond 52 weeks (except for the special-benefits extension described in hours and weeks).
Reporting: the two-week report
Every two weeks you complete a report (online, by phone, or in person) confirming that you were available for work, whether you worked, what you earned, and whether anything changed — for example, if you started a training course, left Canada, or received other money. The report is a legal declaration: false statements can lead to an overpayment, a penalty of up to three times the overpayment, and a violation that raises the hours requirement on your next claim. If you realize you made a mistake in a report, correct it as soon as possible through My Service Canada Account or by calling Service Canada — a voluntary correction is treated far more leniently than a discrepancy found in an audit.

Sources to check: Service Canada, EI — Working while on claim; Employment Insurance Regulations, s. 35 (earnings) and s. 19 (working while on claim); Canada.ca, Digest of Benefit Entitlement Principles, Chapter 5.