Get assistance with your health or retirement benefits administered by Mercer in your region — Australia, United Kingdom, United States & New Zealand




You can call the free call number in Australia for Mercer Super Trust: 1800 682 525.


If you are calling outside of Australia, call +61 3 8306 0900.


For members looking for their Mercer Super Account Log In, visit Mercer Super.

New Zealand


To login to your account or to register, visit the Mercer New Zealand page here.


For other enquiries, you can call us or fill out the enquiry form here and we’ll be in contact.


KiwiSaver & FlexiSaver Members, call the toll-free number: 0508 MERCER (0508 637 237)


From overseas: +61 3 8687 1886 | 9:00am - 7:00pm | Monday - Friday (NZST)

United Kingdom


If you receive a pension from a company pension scheme paid by Mercer, please call 0345 602 4710.


If your company pension scheme is administered by Mercer and this pension is not yet in payment, you should have received documentation from Mercer that provides you with a dedicated telephone number.  If you cannot find this, please complete our contact us form here


If you wish to make a complaint about financial advice that you received from Mercer you should call 0207 178 3159. Our procedure for dealing with regulated complaints is at the following site


If you want to discuss your online access to Mercer OneView, including login details and site navigation please call 0345 600 0229.

United States


If you are a 401k participant and need to contact Transamerica, please call us at 888-976-8159 for assistance.


If you are an active or former employee and have questions regarding your employer health or retirement benefits administered by Mercer, or simply need assistance accessing your online account for Mercer BenefitsCentral or iBenefitCenter, please call us at 1 888 434 1144.


If you are an active employee and have questions regarding your employer health benefits offered through Mercer Marketplace 365, please call 1 855 963 7237; alternatively, if you are a retiree of an employer offering health benefits through Mercer Marketplace 365 and are interested in enrolling in coverage or have questions regarding your current benefits, please call 1 888 434 1144 or email us at


If your employer is offering Voluntary Benefits through Mercer and you are interested in enrolling in coverage or have questions regarding your current benefits, please call us at 1 800-999-6642


If you are a member of an Association and are interested in enrolling in coverage or have questions regarding your current professional liability, life or health policies offered through Mercer, please call us as at 1 800-503-9230.


In 2019, Morneau Shepell Inc. acquired the US Mercer large market health and defined benefit (“DB”) pension plan administration business. For further assistance with defined benefit requests, please contact Morneau Shepell directly at 888-867-5993 or