§ 411. Minimum vesting standards
(a)
General rule A trust shall not constitute a qualified trust under section
401
(a) unless the plan of which such trust is a part provides that an employee’s right to his normal retirement benefit is nonforfeitable upon the attainment of normal retirement age (as defined in paragraph (8)) and in addition satisfies the requirements of paragraphs (1), (2), and (11) of this subsection and the requirements of subsection (b)(3), and also satisfies, in the case of a defined benefit plan, the requirements of subsection (b)(1) and, in the case of a defined contribution plan, the requirements of subsection (b)(2).