A pension earned during marriage is ordinarily part of the marital property analysis in a California divorce. What happens when a couple lived together for years before marrying, and one partner earned retirement benefits during those earlier years? A recent published California appellate decision examines whether an agreement between unmarried partners can give the other partner an ownership interest in a government pension, even where a statute generally makes the pension unassignable and exempt from creditors.
In Seiwald v. Irias (2026), No. A174691, the First District Court of Appeal affirmed an order recognizing Lisa Seiwald’s contractual interest in pension benefits attributable to nearly ten years of premarital cohabitation. The court did not hold that cohabitation alone creates community property. Its decision depended on a trial court finding that the couple had agreed to share property accumulated through their combined efforts. The appellate court considered a narrower question: whether Public Utilities Code section 12337 prevented enforcement of that ownership interest.
A Relationship, a Pension, and an Alleged Agreement
Nicholas Irias worked for the East Bay Municipal Utility District from 1987 through 2018. He and his employer made contributions to his retirement plan. Irias and Seiwald began dating in 1992 and lived together beginning in 1993. They signed a domestic partnership affidavit in December 1993, purchased a San Francisco home together in 1994, and married in February 2003.
Seiwald filed for legal separation in September 2020 and later brought a civil breach-of-contract action. She alleged that, during the period before marriage, the parties had agreed to combine their labor and earnings and share equally in property accumulated from those efforts. The trial court consolidated the civil action with the family proceeding and tried the contract issues first.
Following a five-day trial, the court found an implied-in-fact agreement under Marvin v. Marvin (1976) 18 Cal.3d 660. It concluded that the parties had agreed to share equally in property acquired through their combined efforts during their premarital relationship. That finding included the pension contributions and accumulations attributable to the period before marriage.
Irias objected that his government pension was protected by Public Utilities Code section 12337, which generally makes covered retirement payments and contributions unassignable and exempt from execution. He argued that this statutory protection prevented Seiwald from obtaining a share attributable to their unmarried years.
The Court Distinguished an Owner From a Creditor
California law generally protects covered public pensions against execution and assignment. Section 12337 contains language barring assignment and execution, subject to statutory exceptions. Those protections can matter when a judgment creditor seeks to reach a pension to satisfy an ordinary debt.
Seiwald’s position was different. She was not trying to levy on Irias’s pension to collect a judgment. The trial court had found that the parties agreed to treat property accumulated during their premarital relationship in the manner of community property. Under that agreement, Seiwald claimed an ownership interest in the portion of the pension attributable to the relevant period.
The Court of Appeal relied on the distinction recognized in Phillipson v. Board of Administration (1970) 3 Cal.3d 32 and In re Marriage of Brown (1976) 15 Cal.3d 838. When a spouse owns an interest in pension rights as marital property, recognizing that ownership is different from a creditor attaching the employee’s pension. The court reasoned that unmarried partners may, through an enforceable agreement, adopt a comparable arrangement for property accumulated during their relationship.
The court therefore affirmed the determination that Seiwald was entitled to an equal share of the contributions made by Irias and his employer, and the benefits attributable to those contributions, during the premarital period covered by the agreement. It also accepted the trial court’s authority to fashion relief through payments after Irias received benefits or an actuarial valuation and equivalent compensation through other means. The decision did not require the pension administrator to make an unauthorized direct distribution.
What the October 16 Modification Clarified
The Court of Appeal originally filed its published opinion on September 28, 2026. On October 16, it modified the opinion and denied Irias’s petition for rehearing, without changing the judgment.
The modification expressly clarified that Marvin does not prevent unmarried partners from agreeing to apply California’s marital-property principles by contract. It also explained that section 12337 does not distinguish between an ownership interest created by contract and one created by statute. The court rejected the argument that the contractual-ownership question was outside the scope of the appeal.
The modification matters because the ruling rests on the legal character of Seiwald’s interest. The court did not create a general exemption from pension protections for anyone who lived with the employee. It enforced an ownership interest that the trial court had found arose from the parties’ agreement.
What the Decision Does Not Establish
The Court of Appeal did not independently decide whether Seiwald and Irias had actually entered into an enforceable Marvin agreement. When it permitted this interlocutory appeal, it limited review to the pension statute and accepted the trial court’s contract finding for that purpose. The opinion should not be cited as holding that a shared residence, a lengthy relationship, or a domestic partnership affidavit automatically establishes an agreement to divide retirement benefits.
Nor does the decision mean every retirement plan is governed by the same rules. The case concerned the East Bay Municipal Utility District pension and Public Utilities Code section 12337. Private retirement plans, federal-law restrictions, plan documents, and the form of any requested distribution can present additional issues.
The distinction between ownership and a creditor’s claim is also fact-dependent. An agreement merely promising future support or payment may raise different questions from an agreement giving both parties an existing ownership interest in property accumulated during the relationship. The court distinguished earlier decisions involving claims against decedents’ estates on that basis.
How These Disputes Arise in Practice
A couple may live together for a decade, combine finances, purchase property, and make career decisions on the understanding that their economic gains belong to both partners. If they later separate, title and account statements may identify only one owner. A court may then need to determine whether the parties actually agreed to share the property and what that agreement covered.
Relevant evidence can include the parties’ communications, how they handled earnings and expenses, documents describing their financial arrangements, and conduct over the course of the relationship. A claimant still must establish the agreement and the interest asserted. For a pension, additional questions may involve the period of service, employee and employer contributions, benefit valuation, and a lawful method of satisfying any award.
For couples who intend to share significant property before marriage, a carefully drafted written agreement can reduce later uncertainty. For couples who do not intend to create shared ownership, clarity is equally valuable. Seiwald illustrates the litigation that can follow when the parties’ financial understanding is left to be reconstructed years later.
Legal Authorities
- Seiwald v. Irias, No. A174691 (Cal. Ct. App., 1st Dist., Div. 5), published Sept. 28, 2026, modified Oct. 16, 2026 — official opinion as modified
- Marvin v. Marvin (1976) 18 Cal.3d 660
- Phillipson v. Board of Administration (1970) 3 Cal.3d 32
- In re Marriage of Brown (1976) 15 Cal.3d 838
- California Public Utilities Code § 12337 — official text
- California Family Code § 2610 — official text
Related practice areas: Family Law and Related Areas · Civil Litigation