The FAQ was updated to include this quesion:
Can employers use a Supplemental Unemployment Benefit (SUB) plan to increase their employee’s weekly earnings while they are unemployed and collecting the Canada Emergency Response Benefit?
Given the simplified design of the Canada Emergency Response Benefit (CERB), the provisions that exist under the Employment Insurance (EI) system for employers to make additional payments to workers through SUB plans do not apply to employees who are receiving the CERB. Eligible individuals collecting the CERB receive $2000 for a 4-week period and may earn up to $1,000 in employment and/or self-employment income in each of their benefit periods from March 15, 2020 to October 3, 2020 while continuing to receive the CERB. Amounts received by individuals from any employer in excess of the $1,000 threshold would create an obligation for the individuals to repay CERB amounts they received for the same benefit period.
Employers that wish to do so may continue to submit a SUB plan to Service Canada. By registering a plan, employers can make payments to employees who are currently receiving EI regular or sickness benefits, and will also be prepared should employees need EI benefits at a future time.