Section A – Calculating total insurable earnings
Box 1: Total earnings per T4 summary
Enter the total gross earnings for all employees including the earnings of out of province employees who do work in Ontario, and executive officers as reported on Line 14 of the T4 Summary.
You are responsible for reporting earnings for:
- anyone you employ in your business, including family. Full–time, part–time, seasonal or temporary employees, certain domestic employees, unregistered individuals engaged in construction work, students, apprentices, learners and training participants
- yourself – if you are an independent operator, sole proprietor, partner or executive officer in the construction industry. See our policy on Expanded Compulsory Coverage in Construction for exceptions.
For details and exceptions, please see our policy on Determining Worker and Independent Operator Status.
If you amend a T4, T4 Summary or other earnings after filing the WSIB reconciliation, you must report the amendment to us.
Additional information for construction businesses
Independent operators/sole proprietors/partnerships
Not applicable to independent operators/sole proprietors/partnerships.
Corporations
Enter the total gross T4 earnings for all executive officers as reported on Line 14 of the T4 Summary.
Box 2: Other earnings not on T4 summary
Enter the total gross earnings not reported on T4s for all employees. Include T4As unless issued to contractors/subcontractors, see box 3. Include the non–T4 earnings of executive officers.
For more information on insurable earnings visit the reconciliation glossary or for a complete list of gross earnings and non-insurable gross earnings see our policy on Determining Insurable Earnings.
Additional information for construction businesses
Independent operators
Not applicable to independent operators.
Sole proprietors
Enter the total gross earnings not reported on T4s for all employees, including T4As (except those issued to contractors/subcontractors).
Enter the net business income (Line 135 – T1 General or T2125 Statement of Business or Professional Activities) for the sole proprietor’s earnings. If the net business income is zero or negative, enter $0.
If the net business income is unknown, use the minimum amount (one–third of WSIB annual maximum). Report actual amount when the net business income is known or a T2125 is filed.
For examples of how to calculate insurable earnings, see information for sole proprietors with employees.
Do not report sole proprietor’s earnings if the sole proprietor met the requirements of the home renovation exemption for all of 2019.
Partnerships
Enter the total gross earnings not reported on T4s for all employees, including T4As (except those issued to contractors/subcontractors).
Enter the net business income (Line 135 – T1 General or T2125 Statement of Business or Professional Activities) for the partners’ earnings. If the net business income is zero or negative, enter $0.
If the net business income is unknown, use the minimum amount (one–third of WSIB annual maximum). Report actual amount when the net business income is known or a T2125 is filed.
For examples of how to calculate insurable earnings, see information for partners in a partnership (with or without employees).
Do not report the partners’ earnings if the partner met the requirements of the home renovation exemption for all of 2019.
Corporations
Enter the total gross earnings not reported on T4s for all employees and/or executive officers including T4As, T5s (except those issued to contractors/subcontractors).
For examples of how to calculate insurable earnings, see information for executive officers of a corporation with employees.
Do not report executive officers’ earnings if the executive officer met the requirements of the home renovation exemption for all of 2019.
For more information, see our policy on Insurable Earnings – Construction.
Box 3: Contractors’ earnings
If you did not engage contractors/subcontractors proceed to box 4.
If you had contractors/subcontractors considered your employees (workers) by the WSIB, enter their total insurable gross earnings on this line. For more information, see gross earnings of contractors/subcontractors.
Additional information for construction businesses
Independent operators
Report the total of the labour portion of all your contracts/invoices for 2019 on this line.
For more information about labour portion of contracts regarding adequate or inadequate records, see the labour only in the glossary.
For examples of how to calculate insurable earnings, see information for independent operators.
Sole proprietors, partnerships and corporations
If you made payments to contractors/subcontractors considered your employees (workers) by the WSIB, enter their total insurable gross earnings, based on the labour portion of the contracts.
For more information, see our policy on Insurable Earnings.
Box 4: Volunteer forces (complete enclosed schedule, if applicable)
Only businesses with volunteer forces (fire, ambulance, and police) should complete the schedule for volunteer forces. Enter the total in box 4 on the reconciliation form. All other businesses should proceed to box 5.
Box 5: Optional insurance (see attachment 1, if enclosed)
If there is no pre–printed amount in this box, proceed to box 6.
The pre–printed amount is the total optional insurance amount that was in effect for sole proprietors, partners, independent operators or executive officers for this reconciliation period. Do not change this amount.
Attachment 1 gives details of optional insurance for all persons covered during this reconciliation period, for your information and records. The total amount of insurable earnings, on attachment 1, for all persons with optional insurance, should equal the amount of optional insurance in box 5 on the reconciliation form.
Box 6: Total gross earnings before deductions
Add boxes 1 to 5 and enter the total here. Amounts under volunteer forces (box 4) and optional insurance (box 5) are fully insurable and not subject to deduction.
Additional information for construction businesses
Independent operators
This is the total labour portion from box 3 or optional insurance from box 5.
Box 7: Non–insurable gross earnings
Enter any non–insurable gross earnings included in box 1 and 2, including the portion of earnings of out of province employees that is for work done in other Canadian jurisdictions outside of Ontario.
For more information see our policy on Determining Insurable Earnings.
If you have out of province employees, or employees who work in more than one Canadian Province or territory, go to our policy on Non–resident Workers and Insurable Earnings – Interjurisdictional Agreement.
Additional information for construction businesses
Independent operators
Not applicable to independent operators.
Sole proprietors, partnerships, and corporations
Enter any non–insurable gross earnings included in box 1 and 2.
Enter the sole proprietor’s, partners’, or executive officers’ gross earnings included in box 1 and 2 for any time period during the year they were exempt from mandatory coverage because they met the requirements of the home renovation exemption (three month minimum coverage).
For more information, see our policy on Insurable Earnings in Construction and Expanded Compulsory Coverage.
Box 8: Executive officers’ earnings
For businesses that are not in the construction industry, enter the total executive officers’ gross earnings included in boxes 1 and 2.
Additional information for construction businesses
Independent operators
Not applicable to independent operators.
Sole proprietors
Not applicable to sole proprietors with employees.
Partnerships and corporations
Enter the partners’ and executive officers’ earnings included in Total earnings per T4 Summary and Other earnings not on T4 Summary for the time period they were exempt from mandatory coverage because of a WSIB approved exemption for one partner or executive officer in the partnership/ corporation.
Box 9: Excess earnings
If you have employees or contractors whose gross earnings exceed the 2019 annual maximum insurable earnings ($92,600), enter the total excess earnings for these employees here.
To calculate each individual worker’s (or contractor’s) excess earnings, subtract the annual maximum insurable earnings from their total earnings reported in boxes 1, 2 and/or box 3, if applicable.
Additional information for construction businesses
Independent operators
If the total from box 6 exceeds the annual maximum of $92,600 for 2019, deduct the difference on this line.
Sole proprietors and partnerships
If the net business income for the sole proprietor (after any deductions for non–insurable gross earnings) exceeds the annual maximum of $92,600 for 2019, deduct the difference.
Corporations
If the T4 earnings for an executive officer (after any deductions for non–insurable gross earnings) exceed the annual maximum of $92,600 for 2019, deduct the difference.
Box 10: Total deductions
Add boxes 7, 8 and 9. Enter the total here.
Additional information for construction businesses
Independent operators
Amount in box 9 (if applicable).
Sole proprietors, partnerships and corporations
Add boxes 7 to 9 and enter the total amount in this line.
Box 11: Total insurable earnings
Subtract the amount in box 10 from the amount in box 6 and enter the difference here. These are the total insurable earnings on which premium calculations are based.
Section B – Allocation of total insurable earnings by classification unit
For accounts with only one classification unit (CU), all earnings are considered direct. See more information on allocating direct earnings and common earnings.
You must complete section B to ensure the insurable earnings are allocated correctly. On the form you will have one or more pre–printed CU.
One CU preprinted in section B
Enter the amount from box 11 in column A, direct earnings and in column C, insurable earnings. Proceed to section C – premium calculation.
Two or more CUs preprinted in section B
Businesses reporting under multiple CUs must maintain segregated earnings records for each CU.
You must assign the insurable earnings of each employee, including optional insurance amounts (included on attachment 1, if applicable) to one or more of the CUs.
In most cases you will have earnings that apply directly to each CU and earnings that are common to two or more CUs.
Additional information for construction businesses
Independent operators, sole proprietors, partnerships and corporations
For those with multiple rates use the amounts calculated on the worksheet for calculating and assigning common earnings in construction.
Column A – Assigning direct earnings
Add up the direct earnings assigned to each CU. Enter the total in section B of the form beside the appropriate CU in column A, direct earnings.
If you have no common earnings, also enter the direct earnings totals into column C, insurable earnings.
Proceed to section C – Premium calculation.
Column B – Assigning common earnings
Transfer the common earnings for each CU from column 3 on the worksheet for calculating and allocating common earnings under common earnings (column B) on the reconciliation form.
Transfer the insurable earnings for each CU from column 4 on the worksheet to column C, insurable earnings on the reconciliation form.
For details on how to calculate and prorate common earnings for businesses with multiple classification units, see assigning insurable earnings.
Additional information for construction businesses
For businesses in the construction industry who are classified in Rate Group 755, non-exempt partner and executive officer in construction, do not assign common earnings to this rate group.
Section C - Premium calculation
Transfer the insurable earnings (Section B column C) for each CU to the appropriate CU under (column C).
Box 12: Total insurable earnings
Add all entries under section C, column C and enter the total in box 12. If this amount does not equal the amount in section A, box 11, review your calculations.
Box 13: Total premium amount
To calculate the premium for each CU, multiply the amount in column C by the premium rate pre–printed on the form in column D, then divide by 100.
Premium = insurable earnings x premium rate ÷ 100
Enter the result in the CU premium column. Add up the premiums for all the CUs and enter the total or the $100 minimum premium (whichever is more) in box 13.
A minimum premium of $100 applies to accounts that are open during any part of a calendar year, even if no premiums are reported.
Box 14: Total premium amount reported
This amount shows the WSIB’s record of the total premium amount already reported on all premium remittance forms for the reconciliation period covered, and reflects any further revisions or adjustments processed by the WSIB by the date the reconciliation form is printed.
The amounts on the reconciliation form may not match your records because they may not show the most recent reporting period. The amount recorded is the total premiums reported throughout the year, not premiums actually paid.
In case the amount we show reported does not match your records, consult your latest premium remittance form. The difference may be because we did not receive your latest reporting prior to printing the reconciliation form.
Box 15: Reconciled difference
Subtract the amount in box 14 from box 13 and enter the difference here.
If the amount is negative, enter the amount in box 16.
If the amount is positive, enter the amount in box 17.
The WSIB calculates these amounts and enters them on your statement of account along with the entry for the reconciled difference.
Return the reconciliation form even if the reconciled difference or total insurable earnings are zero. Failure to do so could result in non–compliance interest and charges.
Box 16: Credit to account
If your account is open, the WSIB will apply the year end reconciliation credit (plus interest) to any balance owing on your account for this or upcoming reporting periods.
If your account is closed and there is a net credit, the WSIB will refund the credit.
Box 17: Amount due
This is the amount you owe the WSIB.
Box 18: Amount paid
Enter the amount of the payment you are making.
Section D — Certification
Complete all areas of section D.
Authorized contact
An authorized contact has been given authorization by a corporate officer in your company or someone who would normally have access to, and control of, the information to be released.
Examples include sole proprietors, partners, presidents, vice–presidents, general managers, chief financial officers, controllers, directors of finance, safety officers and other people with access to confidential business information.