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Supplemental unemployment benefit plan (SUB plan)

A supplemental unemployment benefit plan (SUB plan, or SUBP) is a plan set up by an employer or group of employers to top up employees’ Employment Insurance benefits during a period of unemployment. It may be registered or unregistered, which affects how top-ups are treated.

A seller laying off staff, temporarily or indefinitely, may run a SUB plan to top up what employees receive from Employment Insurance. A buyer meets one as a plan that may need to continue, change or end. See can I lay off staff right after closing and temporary layoff.

What the sources say

The Employment Insurance Regulations, s.37, say payments under a SUB plan are not earnings for the listed purposes of the Act, subject to the other provisions of s.37. That section also lists what a qualifying plan must contain, including that it be submitted to the Commission before its effective date. The CRA says a plan may be registered with Service Canada if it meets s.37, or with the CRA if it meets the registration conditions in s.145 of the Income Tax Act.

  • Top-ups from a plan that does not qualify under the Income Tax Act are employment income, reported in Box 14 of the T4.
  • Top-ups from a plan that qualifies are reported under Code 152 on the T4A, except maternity and parental top-ups, which the CRA says go on the T4.

Ask whether any plan exists, where it is registered and what it covers.

Sources

This definition is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Government of Canada (Department of Justice)Government
    Employment Insurance Regulations, section 37 (Supplemental Unemployment Benefit Plans)
    laws-lois.justice.gc.ca·Checked Oct 25, 2026
  2. 02
    Canada Revenue AgencyGovernment
    Supplementary unemployment benefit plan (SUBP)
    canada.ca·Checked Oct 25, 2026

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