On December 23, 2015, following nearly 5 years of negotiations, TWU Local 555, the union representative of Southwest’s below-wing agents, announced that it had reached a “tentative agreement in principle” with management. The TA provides for approximately 5% scale increases on date-of-signing and 4% six months later, at which time Southwest would essentially match Delta scales. Thereafter, scale increases total approximately 12% over the life of the 5-year deal. In 2015, the Southwest profit sharing payout to employee 401(k) plans was 9.6%, compared to 16.58% at Delta. On December 29, the TWU board announced that it would send the TA to the membership for a ratification vote “without recommendation”.