Based on the WSIB Operational Policy Manual (Source 3), here's a clear summary of key points about determining insurable earnings:
## What Are Insurable Earnings? Insurable earnings include: - Amounts usually reported on a worker's earnings statement - Income reported in box 14 of the T4 slip as gross earnings - Earnings derived from: * Hourly rate * Piecework * Salary * Commission * Vacation pay * Room and board * Bonuses * Value of most allowances and taxable benefits
## Important Details - Insurable earnings are reported **before** deductions for income tax, EI, CPP, health care plans, loan payments, and union dues - All earnings are considered insurable unless specifically listed as non-insurable in Appendix II - Insurable earnings are subject to the annual maximum insurable earnings - Insurable earnings for premium calculation are **not** the same as average earnings for benefit purposes
## Special Cases - For contractors who work alone and are considered workers by the principal: - The principal must report and pay premiums on the worker's earnings - The labor portion of the contract is determined based on records or WSIB's table
- For landscaping contracts, the labor portion of the contract is determined by: * Column A (33 1/3%): When major materials/equipment were supplied and adequate records exist * Column B (25%): When major materials/equipment were supplied but records are inadequate * Column C (60%): When no major materials/equipment were supplied
This policy applies to all decisions made on or after December 5, 2024, regarding premiums based on earnings earned from January 1, 2021.
For more details, refer to the full document or the referenced sections (like 14-02-18 for construction industry specifics).