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Industry guide · NAICS 336 · Updated September 2026

Retirement plans for aerospace & defense

This page is for the suppliers, not the primes. AS9100 on the wall, flowdown clauses in every purchase order, forty machinists and inspectors on the floor — and a bundled 401(k) nobody has benchmarked since it was sold to you.

The short answer

Aerospace and defense suppliers rarely have a CalSavers problem: most firms in this sector already sponsor a plan. What they have instead is a fiduciary and cost problem, and on some contracts a fringe-benefit problem. The plan is often an expensive bundled product placed years ago with no independent 3(38) or 3(21) fiduciary named, no documented review process, and revenue-sharing buried in the fund lineup. And where any part of your work carries Service Contract Act or Davis-Bacon fringe obligations, the state program is structurally useless: CalSavers accepts no employer contributions whatsoever, so it cannot discharge a fringe requirement. Only a real plan can.

Why this industry is different

The mandate treats every employer alike. The payroll realities underneath don't cooperate:

  • The plan was sold, not designed. Larger suppliers usually have something in place — typically a bundled recordkeeper-plus-adviser package with no independent fiduciary, no benchmarking file and a fund lineup nobody has questioned in five years.
  • Government-contract fringe obligations run in parallel. Service Contract Act health-and-welfare rates and Davis-Bacon fringes on covered work can be satisfied with bona fide benefit-plan contributions instead of cash wages — but only into a plan that can accept employer money. CalSavers cannot.
  • Engineering and skilled-trade competition is direct and local. You are hiring from the same South Bay labor pool as the primes, whose plans are large, cheap and generous. A candidate comparing offers is comparing that too.
  • Program cycles are long and lumpy. A single sole-source program ending, or an award slipping two quarters, swings headcount and cash flow in a way a fixed employer contribution has to be designed around rather than surprised by.
  • Crossing 100 participants happens quietly. A supplier that wins a build package and doubles its floor crosses into annual plan-audit territory without anyone raising it until the Form 5500 is due.
386
aerospace & defense establishments in Los Angeles County alone.
Source: Census County Business Patterns 2022, NAICS 336
$45,000
first-cycle penalty exposure for a typical 60-person shop that ignores its notices — then $30,000 a year.
Source: Cal. Gov. Code § 100033(b)

What actually works

For a supplier that already has a plan, the work is a review, not a build: benchmark the all-in cost (recordkeeping, advisory, and the fund-level expense ratios that quietly carry revenue-sharing), name a fiduciary in writing, document an investment policy and an actual committee process, and confirm the eligibility and vesting provisions still match the workforce you have rather than the one you had when the document was drafted. We act as a 3(38) discretionary or 3(21) advisory fiduciary in writing, which moves a defined slice of that liability off the owner personally — that is a contractual arrangement, not a reassurance.

Where covered government work is in the mix, the plan does double duty. Fringe dollars contributed to a bona fide plan can count toward the SCA health-and-welfare or Davis-Bacon fringe obligation rather than being paid out as additional cash wages, subject to the annualisation, vesting and recordkeeping rules that govern those contributions. Because plan contributions are not wages, this can also change the base on which certain payroll-driven costs are computed. The mechanics are exacting and the Department of Labor audits them; set this up with people who do certified payroll and government contract compliance for a living, and design the plan document around it from the start rather than bolting it on.

The SECURE 2.0 credits frequently cover most of the first three years' administration for employers under 50 staff — the formula, worked honestly — and if after the arithmetic CalSavers is still the right answer for your shop, we'll say so: the full comparison · run your own numbers.

Where this sector sits locally. The 386 aerospace and defense establishments Census records in Los Angeles County are heavily concentrated in the South Bay, around the customers: Northrop Grumman's Space Park campus in Redondo Beach, Boeing's El Segundo satellite operations, SpaceX's Hawthorne factory, and the Space Force and Air Force procurement presence at Los Angeles Air Force Base in El Segundo. Orange County carries a second cluster through Huntington Beach, the Anaheim Canyon industrial area, Fullerton and Costa Mesa. Aduna Capital is an independent registered investment adviser and is not affiliated with, endorsed by, or a supplier to any of these organizations — they are named to locate the industry, nothing more.

By county

This guide is statewide. The county pages go local — where the industry physically clusters, which cities it sits in, and the municipal rules that stack on top of the state mandate.

Where this industry clusters near us

Aerospace & Defense questions

Can CalSavers satisfy our Service Contract Act fringe obligation?

No. That is the single clearest answer on this page. CalSavers is an employee payroll-deduction Roth IRA program — the employer facilitates deductions and is expressly not permitted to contribute. A fringe obligation is by definition employer money. If you have covered service or construction work and you are relying on the state program, you have satisfied the retirement mandate and satisfied none of the fringe requirement. A qualified plan that can accept employer contributions is the only version of this that does both.

We already have a 401(k) through our payroll provider. Why would we change anything?

You may not need to change the plan at all — you may need to change who is watching it. Three questions settle it. Is anyone named in writing as a 3(38) or 3(21) fiduciary, or does that responsibility sit with you personally by default? Do you have a written record of the last time the fund lineup and the all-in fees were benchmarked against alternatives? And do you know what the plan costs in total, including fund-level expenses, not just the invoice? If any answer is no, that is the gap, and it is a gap the Department of Labor asks about, not one we invented.

Our headcount is about to jump on a new build package. What breaks?

The 100-participant threshold, mainly. Counted on participants with account balances at the beginning of the plan year, crossing it brings an annual independent plan audit and the cost and lead time that goes with it — the 80-to-120 rule can let a plan that grew past 100 continue filing as a small plan for a year in some circumstances, which is worth knowing before you panic. The way to control it is eligibility design: a service requirement means new hires do not become participants with balances on day one, which gives you a year to plan for the audit rather than discovering it at filing time.

Our prime asks about workforce retention in supplier reviews. Where does the plan fit?

Not as a checkbox — there is no clause requiring a 401(k). It shows up indirectly: AS9100 and prime supplier-qualification processes care about competent, trained, stable personnel, and turnover among inspectors, programrs and special-process operators is a risk your customer is pricing. A plan is part of how a small supplier competes for that labor against El Segundo and Redondo Beach payrolls.

Educational information, not legal or tax advice. Establishment counts are from Census County Business Patterns (most recent published by-industry figures). Confirm your CalSavers obligations at (855) 650-6916 and with your CPA; consult ERISA counsel on plan design. Aduna Capital LLC is not affiliated with CalSavers, is registered as an investment adviser in California, and works from its principal office in Norwalk.

A plan designed around aerospace & defense — not around the average employer

We design around the census you actually have — turnover, seasonality, pay structure and all. Fifteen minutes, no charge, and a straight answer.