Title 29 › Chapter 18— EMPLOYEE RETIREMENT INCOME SECURITY PROGRAM › Subchapter I— PROTECTION OF EMPLOYEE BENEFIT RIGHTS › Subtitle Subtitle B— Regulatory Provisions › Part 2— participation and vesting › § 1060
When more than one employer runs the same retirement plan, the law mostly treats all those employers and their workers as if they were one employer. That means rules in sections 1052, 1053, and 1054 apply as if everyone worked for a single employer, and the minimum funding rule in section 1082 is figured as if all plan participants had the same employer. Rules about breaks in service, and how to divide minimum funding among employers in some cases, are set by the Secretary (and by the Secretary of the Treasury when the law says so). If an employer keeps a plan from a predecessor, service with the predecessor counts as service for the current employer. Employees of corporations in a controlled group (under section 1563(a) of the tax code, with two exceptions) or of trades or businesses under common control are also treated as working for one employer for these rules. A small employer can combine a defined benefit plan and a 401(a) individual account plan into one trust and still have the rules applied separately to each plan. If those two plans are combined (an “eligible combined plan”), the defined benefit part must give each worker an accrued employer-funded benefit that equals at least the smaller of 1% times years of service or 20% of final average pay (final average pay uses up to 5 consecutive years of highest pay). If the defined benefit plan meets certain interest-credit rules, yearly pay credits must be at least 2% if age 30 or under, 4% if over 30 but under 40, 6% if 40–49, and 8% if 50 or over. The individual account plan must use an automatic contribution arrangement that treats eligible employees as contributing 4% of pay unless they opt out or pick a different rate, and the employer must match 50% of employee contributions up to 4% of pay. Vesting must give full nonforfeitable rights after 3 years for employer-funded benefits. The plans must apply contributions and benefits uniformly and meet certain nondiscrimination and coverage tests. For automatic arrangements, employees must get notices and have time to opt out before the first contribution and get yearly notices. An eligible combined plan is not covered by the “except” in section 1002(35) and is treated as a single plan for section 1023. A CSEC plan is a special kind of multi-employer-style defined benefit plan that meets specific conditions about the employers and dates (including being maintained by more than one 501(c)(3) employer as of June 25, 2010, or by certain other organizations as of June 25, 2010 or January 1, 2000). Employers treated as a single employer under certain tax rules are counted together. A plan that otherwise meets the CSEC definition becomes a CSEC plan unless the plan sponsor opts out by the end of the first plan year beginning after December 31, 2013; that opt-out takes effect for that year and can only be undone with the Treasury Secretary’s permission. If a plan is treated as a CSEC plan, section 104 of the Pension Protection Act of 2006 stops applying to it as of the date it becomes a CSEC plan.
Full Legal Text
Labor — Source: USLM XML via OLRC
Legislative History
Reference
Citation
29 U.S.C. § 1060
Title 29 — Labor
Last Updated
Apr 5, 2026
Release point: 119-73not60