MetLife Inc. MET, +0.89% said Monday it is planning to increase its investment in employees using tax savings from the overhaul that was written into law in December. The life insurer said it will establish a minimum wage of $15 an hour and a minimum group life insurance benefit of $75,000, regardless of an employee's pay. The benefit was previously set at one times annual pay. The company is planning to introduce a $300 minimum monthly credit for the cash-balance formula of its defined benefit pension plan, also regardless of employee pay. It will enhance its 401-k plan by moving to auto-enrollment and extend company-paid group legal services offered through MetLife's Hyatt Legal Plans. Shares were not active premarket, but have fallen 5% in the last 12 months, while the S&P 500 has gained 13%.