(a)
Plans covered
Except as provided in subsection (b) of this section, this subchapter applies to any plan (including a successor plan) which, for a plan year—
(1)
is an employee pension benefit plan (as defined in paragraph (2) of section
1002 of this title) established or maintained—
(A)
by an employer engaged in commerce or in any industry or activity affecting commerce, or
(B)
by any employee organization, or organization representing employees, engaged in commerce or in any industry or activity affecting commerce, or
which has, in practice, met the requirements of part
I of subchapter
D of chapter
1 of title
26 (as in effect for the preceding 5 plan years of the plan) applicable to the plans described in paragraph (2) for the preceding 5 plan years; or
(2)
is, or has been determined by the Secretary of the Treasury to be, a plan described in section
401
(a) of title
26, or which meets, or has been determined by the Secretary of the Treasury to meet, the requirements of section
404
(a)(2) of title
26.
For purposes of this subchapter, a successor plan is considered to be a continuation of a predecessor plan. For this purpose, unless otherwise specifically indicated in this subchapter, a successor plan is a plan which covers a group of employees which includes substantially the same employees as a previously established plan, and provides substantially the same benefits as that plan provided.