United States Onboarding August to October 2025

This guide is for employees whose hire date falls before October 1st as well as the new process for employees going forward. Please refer to the chart below and follow the instructions that correspond to your specific start date to ensure a smooth onboarding process during our payroll transition. 


Start DateGMS Payroll registrationADP Payroll registrationGMS Benefits enrolmentADP Benefits enrolment
Aug 20-Sep 1YESYESYESYES
Sep 2 - 21YESYESNOYES
Sep 22-30NOYESNOYES
Oct 1 onwardNOYESNOYES


Important:

  • GMS payroll registration will include completing the federal and state tax withholding, direct deposit, and i9 form. 
  • If your start date requires you to complete the GMS and ADP payroll registration, you will not be required to complete the federal and state tax withholding, direct deposit, and i9 forms again on ADP, only on GMS. 

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