Guardian Investor Services LLC
Contact Us - Retirement Plan Information

You can send us an Email using this form: Email Form

Mailing Address & Telephone Number:

401(k)
401(k)
c/o Defined Contribution Services
PO Box 8396
Boston, MA 02266-8396

Certified, registered or overnight mail:
RS Funds
c/o BFDS-Defined Contribution Services
500 Victory Road
Quincy, MA 02171

Plan Sponsor - (866) 539-7893
Plan Participant - (866) 727-4015

SIMPLE IRA
RS Funds-SIMPLE IRA Administration
c/o Defined Contribution Services
PO Box 8397
Boston, MA 02266

Certified, registered or overnight mail:
RS Funds
c/o BFDS-Defined Contribution Services
500 Victory Road
Quincy, MA 02171

(866) 727-7675

Business hours:
Monday through Friday
8:30a.m. – 4:30 p.m., Eastern Standard Time

Customer Service hours:
Monday through Friday
8:30a.m. – 7:00p.m., Eastern Standard Time

For more complete information, including a prospectus, please contact your financial professional. To find a financial professional in your area click here, Office Locator. You may also view a current prospectus online or contact Guardian Investor Services LLC at 1-800-221-3253. The prospectus contains important details and information. Investors should consider the fund's investment objectives, risks, charges and expenses, which are explained in detail in the prospectus. Be sure to read it carefully before investing or sending money.

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