MTA Benefits provides exclusive programs at deep member discounts, partnering with highly respected, responsible companies that include Hanover, MetLife, Unum, Boston Mutual Life Insurance, LifeLock and other major corporations. With MTAB, you're assured exceptional benefits. At MTAB, our mission is to support membership activities of MTA by providing essential economic benefits and fundamental services to members and their eligible family members - and to do this on a self-funding basis without using MTA dues.