Complete the EFT form--you can download it below. This is the only acceptable form for a MassHealth provider application for electronic payment.A bank letter is an official document from your bank that provides important information about your business' official bank account. To do this they must supply the banking information necessary to direct funds to one checking or savings account and confirm their taxpayer ID to the Town. Forms can be mailed to Workers Credit Union, 119 Russell St, Littleton, MA 01460, brought to your local branch, or faxed to 978-353-4200 unless otherwise noted. Bank address—100 Federal Street, Boston, MA 02110. Wire payment ABA routing number—026 009 593. This tool will prefill the form based on the information you provide. Print and sign the form then return to the HR office for processing. Need help setting up or understanding direct deposit?