29 U.S.C. § 1140
Section 1140 · Interference with protected rights
This is § 510 of the Employee Retirement Income Security Act of 1974
Amended 2 times on record
Applied in 1,141 court decisions — leading case Ingersoll-Rand Co. v. McClendon (1990)
Most recently applied in Nalco Company LLC v. Laurence Bonday (July 2025)
Applied most in the First Circuit Circuit (67 decisions)
Cases citing this section usually also cite 29 U.S.C. § 1132 · 29 U.S.C. § 1001 · 29 U.S.C. § 1002
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
It shall be unlawful for any person to discharge, fine, suspend, expel, discipline, or discriminate against a participant or beneficiary for exercising any right to which he is entitled under the provisions of an employee benefit plan, this subchapter, section 1201 of this title, or the Welfare and Pension Plans Disclosure Act [29 U.S.C. 301 et seq.], or for the purpose of interfering with the attainment of any right to which such participant may become entitled under the plan, this subchapter, or the Welfare and Pension Plans Disclosure Act. It shall be unlawful for any person to discharge, fine, suspend, expel, or discriminate against any person because he has given information or has testified or is about to testify in any inquiry or proceeding relating to this chapter or the Welfare and Pension Plans Disclosure Act. In the case of a multiemployer plan, it shall be unlawful for the plan sponsor or any other person to discriminate against any contributing employer for exercising rights under this chapter or for giving information or testifying in any inquiry or proceeding relating to this chapter before Congress. The provisions of section 1132 of this title shall be applicable in the enforcement of this section.
Editorial notes U.S. Code · Office of the Law Revision Counsel
References in Text
The Welfare and Pension Plans Disclosure Act, referred to in text, is Pub. L. 85–836, Aug. 28, 1958, 72 Stat. 997, as amended, which was classified generally to chapter 10 (§301 et seq.) of this title, and was repealed by Pub. L. 93–406, title I, §111(a)(1), Sept. 2, 1974, 88 Stat. 851 (Employee Retirement Income Security Act of 1974), effective Jan. 1, 1975. Such section 111(a)(1) also provided that the Welfare and Pension Plans Disclosure Act should continue to apply to any conduct and events which occurred before Jan. 1, 1975 (see section 1031 of this title). For complete classification of the Welfare and Pension Plans Disclosure Act to the Code prior to such repeal, see Tables.
This chapter, referred to in text, was in the original “this Act”, meaning Pub. L. 93–406, known as the Employee Retirement Income Security Act of 1974. Titles I, III, and IV of such Act are classified principally to this chapter. For complete classification of this Act to the Code, see Short Title note set out under section 1001 of this title and Tables.
Amendments
2006—Pub. L. 109–280 inserted before last sentence “In the case of a multiemployer plan, it shall be unlawful for the plan sponsor or any other person to discriminate against any contributing employer for exercising rights under this chapter or for giving information or testifying in any inquiry or proceeding relating to this chapter before Congress.”
Regulations
Secretary authorized, effective Sept. 2, 1974, to promulgate regulations wherever provisions of this subchapter call for the promulgation of regulations, see section 1031 of this title.