What are the client's responsibilities during CSS?

• A. Work with TSS to set up CSS
• B. Complete WSE upload and submit to TSS
• C. Complete I‑9 forms within 3 days of Live Date
• D. All of the above

Answer: (D)

During CSS, the client is expected to be actively involved in setup, data submission, and compliance to ensure a smooth implementation. Collaborating with the TriNet Service Specialist to set up CSS ensures the system is configured to fit the client’s needs and processes. Completing the WSE upload and submitting it to the TSS provides the necessary data so payroll and HR workflows can function correctly from day one. Finishing I‑9 forms within three days of the Live Date is essential for legal employment eligibility and helps prevent delays or compliance issues as you go live.

All of these steps together cover the full onboarding responsibility, which is why this option is the best choice. Taking on just one piece leaves gaps—without proper setup, data, or compliance timing, the live date and ongoing operations can be adversely affected.