The most common types of ERISA lawsuits include benefit denial claims under Section 502(a)(1)(B), where participants sue to recover wrongfully denied health, disability, pension, or life insurance benefits; breach of fiduciary duty claims under Section 502(a)(3), which target plan administrators for imprudent investments, excessive fees, or self-dealing; excessive fee litigation challenging inflated 401(k) recordkeeping and investment management costs; Section 510 interference claims for retaliation against employees exercising ERISA rights; document disclosure violations under Section 502(c) for failure to provide required plan documents; and class action lawsuits representing multiple participants harmed by systematic ERISA violations. Sanford Heisler Sharp has successfully litigated landmark ERISA class actions including cases against General Electric, UnitedHealth, TIAA, and Walgreens, recovering substantial settlements for plan participants denied proper benefits or harmed by fiduciary misconduct. We are actively investigating potential mismanagement of 401(k) by T-Mobile.