Whoever being—

(1) an administrator, officer, trustee, custodian, counsel, agent, or employee of any employee welfare benefit plan or employee pension benefit plan; or

(2) an officer, counsel, agent, or employee of an employer or an employer any of whose employees are covered by such plan; or

(3) an officer, counsel, agent, or employee of an employee organization any of whose members are covered by such plan; or

(4) a person who, or an officer, counsel, agent, or employee of an organization which, provides benefit plan services to such plan

(Added Pub. L. 87–420, § 17(e), Mar. 20, 1962, 76 Stat. 42; amended Pub. L. 91–452, title II, § 225, Oct. 15, 1970, 84 Stat. 930; Pub. L. 93–406, title I, § 111(a)(2)(C), Sept. 2, 1974, 88 Stat. 852; Pub. L. 103–322, title XXXIII, § 330016(1)(L), Sept. 13, 1994, 108 Stat. 2147.)