This page includes Code §414(a), (d), (o), and (t). Code §414(b), (c), (e), (m), (n), (q), and (u) are on other pages.
For purposes of this part--
(1) in any case in which the employer maintains a plan of a predecessor employer, service for such predecessor shall be treated as service for the employer, and
(2) in any case in which the employer maintains a plan which is not the plan maintained by a predecessor employer, service for such predecessor shall, to the extent provided in regulations prescribed by the Secretary, be treated as service for the employer.
For purposes of this part, the term "governmental plan" means a plan established and maintained for its employees by the Government of the United States, by the government of any State or political subdivision thereof, or by any agency or instrumentality of any of the foregoing. The term "governmental plan" also includes any plan to which the Railroad Retirement Act of 1935 or 1937 applies and which is financed by contributions required under that Act and any plan of an international organization which is exempt from taxation by reason of the International Organizations Immunities Act (59 Stat. 669). The term "governmental plan" includes a plan which is established and maintained by an Indian tribal government (as defined in section 7701(a)(40)), a subdivision of an Indian tribal government (determined in accordance with section 7871(d)), or an agency or instrumentality of either, and all of the participants of which are employees of such entity substantially all of whose services as such an employee are in the performance of essential governmental functions but not in the performance of commercial activities (whether or not an essential government function).
The Secretary shall prescribe such regulations (which may provide rules in addition to the rules contained in subsections (m) and (n)) as may be necessary to prevent the avoidance of any employee benefit requirement listed in subsection (m)(4) or (n)(3) or any requirement under section 457 through the use of--
(1) separate organizations,
(2) employee leasing, or
(3) other arrangements.
The regulations prescribed under subsection (n) shall include provisions to minimize the recordkeeping requirements of subsection (n) in the case of an employer which has no top-heavy plans (within the meaning of section 416(g)) and which uses the services of persons (other than employees) for an insignificant percentage of the employer's total workload.
All employees who are treated as employed by a single employer under subsection (b), (c), or (m) shall be treated as employed by a single employer for purposes of an applicable section. The provisions of subsection (o) shall apply with respect to the requirements of an applicable section.
For purposes of this subsection, the term "applicable section" means section 79, 106, 117(d), 120, 125, 127, 129, 132, 137, 274(j), 505, or 4980B.