Does this include common-law notice?

No. It calculates ESA minimums; common-law reasonable notice can be higher.

Ontario · ESA minimums

Ontario severance and termination pay calculator

Estimate Ontario Employment Standards Act termination pay and severance pay minimums.

Rates for 2026, last checked 27 September 2026 · Ontario Employment Standards Act guide

Years of serviceRegular weekly wages ($) Employer global payroll is at least $2.5 million

Six years at $1,000 per week with payroll at or above $2.5m → six weeks' termination pay plus six weeks' severance = $12,000.

These are ESA minimums. Common-law reasonable notice can be much higher; get legal advice before a termination.