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Invalid data: What employers need to know

Published on February 6, 2025

When you file your monthly report with the Commission de la construction du Québec (CCQ), an error message indicating invalid data may appear. 

This error message does not keep you from filing your monthly report, but the invalid data will not be invoiced. 

The monthly report will therefore have to be amended so that workers’ hours, contributions, and entitlements are correctly recorded. 

What are invalid data?

Invalid data occur when information entered by the employer does not correspond to information contained in the CCQ’s files. This may involve, for example:

  • An employee’s identification (SIN, name, client number)
  • The trade, occupation, or apprenticeship period
  • The region or the sector
  • The wage schedule or union local  


    • Recognizing invalid data before the monthly report is filed increases compliance and avoids delays, errors, and elements that are not invoiced.  

    How do I recognize invalid data? 

    They are easy to find: 

  • An orange “!” icon in a circle appears in “Mes rapports mensuels”, beside the lines concerned. 
  • A “Données non conformes” section is displayed in the detailed view of the report.

    • Does this prevent me from filing the report? 

    No, the report can be filed even if it contains invalid data. 

    But be careful: 

  • The line concerned is not invoiced  
  • The information is not transferred to the employee’s file
  • Nothing is recorded as long as the invalid data are not corrected 
     

    • What are the impacts of invalid data?  

    Invalid data may lead to, among other things:

  • An unrecorded line, therefore no contribution or entitlement transferred 
  • A gap between the amount calculated by the employer and the CCQ’s invoice (the employer must pay the amount invoiced, then correct the line)
  • Delays in employee entitlements (vacations, compensation, funds, etc.)

    • How to correct invalid data 

    It is possible to make corrections until the 15th day of the month following the report period (for example, for the January report, corrections are permitted until February 15), without penalty. 

    There are two ways to amend your monthly report to correct invalid data.  

    Option A – By modifying the line directly

    Option B – By amending the monthly report

    You can amend your monthly report by re-creating a new corrected line for each employee. A new invoice is then generated. 

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