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Human Resources Services

Employee Self Service for Teaching Assistants and Research Assistants in-lieu

The Employee Self Service portal in Mosaic provides you with a secure and convenient way to access important information related to your employment.  

NEW for Fall 2024: Review, submit, and update your personal and payroll information in Employee Self Service.  

New or Returning Teaching Assistants (TAs) and Research Assistants in-lieu (RAs) 

If you’re a new or returning TA or RA in-lieu, you will receive a notification in your McMaster email from Human Resources, ahead of your start date, to submit the necessary information for payroll. This is required to receive payment.  

What can you do through the ESS portal? 

  • Readily access personal details and your payroll dashboard
  • Securely submit or update your:
    • Social Insurance Number (SIN), work permit, name, address and emergency contacts
    • Banking information for direct deposit payments issued by payroll
    • Tax forms including both TD1 Federal and TD1-ON Provincial
    • Collection of Personal Information (COPI) form
  • Register for compliance training and more!

How to access Employee Self Service? 

Log into Mosaic and navigate to the TA/Scholarship Onboarding Homepage via the drop-down menu (at the top of the page).

Resources and more information

Check out the ESS one-pager. Additional information and resources can be found on the Employee Self Service Resource page.

For any inquiries, please contact your department administrators or the Employee Contact Centre.

Frequently Asked Questions

The Employee Self Service (ESS) module in Mosaic enables employees to initiate electronic updates to their personal and payroll information on their own. These updates include address and contact information, emergency contact details, direct deposit information (bank details), and Federal and Provincial tax form submissions.

For more information, please visit the Self Service Resources site.

TAs and RAs in-lieu should reference the Onboarding Checklist found under the TA/Scholarship Onboarding Homepage to review all mandatory tasks requiring completion to receive payment. For more information, please visit the Self Service Resources site.  

All information must be completed in ESS on the Saturday before the week of the Friday pay deposit in order to ensure no delays in payment occur.  

You can reference the Onboarding Checklist found under the TA/Scholarship Onboarding Homepage to review all mandatory tasks requiring completion to receive payment.

For more information, please visit the Self Service Resources site.   

Information Box Group

Access Employee Self Service

Information Box Group

Top Tip

Keep an eye on your McMaster email account for important notifications.