AB 889 revises Labor Code Section 1773.1 to specify what employer payments qualify as "per diem wages" on public works and how employers may claim credit against prevailing per diem obligations. The bill lists eligible categories (health and welfare, pension, vacation, travel, subsistence, certain training, LMCA worker-protection programs, CBA administrative fees, and similar purposes), clarifies what counts as an "employer payment," and limits credits in several specific situations.
The change matters for contractors, unions, public agencies, and compliance teams because it alters bid math, documentation requirements, and audit risk. It also creates new annualization rules, record-production duties for employers, and filing requirements for collective bargaining agreements — all of which will affect how firms price public works and prove compliance to the Labor Commissioner.
At a Glance
What It Does
The bill expands and defines the list of employer payments that may be treated as per diem wages and establishes when those payments count as credit against prevailing per diem obligations. It sets calculation rules (including annualization) and narrows certain credits where other laws already require benefits or where payments are not made under specified agreements or programs.
Who It Affects
General and prime contractors on California public works, subcontractors that contribute to benefit funds, unions and trustees that receive payments, the Department of Industrial Relations and Labor Commissioner enforcement staff, and public owners that evaluate bids and prevailing wage determinations.
Why It Matters
AB 889 changes the inputs used to compute prevailing wage compliance and bid pricing, increases documentation and audit exposure for employers claiming credits, and reduces legal ambiguity around which benefit payments count — potentially shifting bargaining and benefit-structuring choices between employers and unions.
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What This Bill Actually Does
The bill starts by defining "per diem wages" to include certain employer-paid benefits that historically have been treated as part of the wage package on public works projects. It provides an explicit list — health and welfare, pension, vacation, travel, subsistence, authorized apprenticeship or training costs (when reasonably related), worker-protection programs tied to the federal Labor Management Cooperation Act, and administrative fees required by a collective bargaining agreement — and adds a catchall for similar purposes.
That list makes clear that non-cash employer-funded programs can count as part of the prevailing per diem total, but only when they meet the statute's conditions.
AB 889 then explains what qualifies as an "employer payment": irrevocable contributions to trusts or third parties, anticipated actual costs when the employer has an enforceable written commitment to fund a plan, and payments specifically to the California Apprenticeship Council. The bill allows employers to take those payments as a credit against their per diem obligations, but it draws several bright lines: it bars credit for benefits required by other state or federal law, for payments to monitor and enforce public-works laws unless made through the LMCA-authorized programs, and for CBA administrative fees unless the payments are made under an agreement that binds the employer.To prevent straightforward substitution of cash wages for benefit credits without guardrails, the bill preserves the employer's duty to pay prevailing hourly straight-time and overtime rates.
It also permits a structured swap — where an increased employer payment lowers an hourly basic rate — only if the shift follows collective-bargaining criteria, the combined hourly rate and employer payment still meet prevailing per diem and overtime rates in the director’s determination, and the employer payment is irrevocable except for errors. The statute allows credit to be claimed on a schedule that recognizes how employers pay benefits (not strictly limited to the same pay period) and requires employers to substantiate calculations when their public-works employer payments exceed private-sector contributions.Finally, AB 889 strengthens administrative control and transparency: it requires filing collective bargaining agreements or final drafts with the Department of Industrial Relations for use in prevailing wage determinations, requires employers to produce records of hours and payments on request, and gives the Labor Commissioner authority to deny credits if records are not provided or if the annualization rules are not met.
The bill also removes certain earlier exemptions to annualization, meaning employers must expect stricter, consistent treatment going forward.
The Five Things You Need to Know
An employer may claim credit for an employer payment even if the contribution or cost is not paid in the same pay period, provided the employer makes those contributions or payments on a regular schedule of at least quarterly.
When employer payments for public works exceed those on private construction, the bill requires annualizing the credit unless the higher payments are covered by an enforceable obligation to pay at the same rate for private work, are mandated by a project labor agreement, or are payments to the California Apprenticeship Council.
Defined contribution pension contributions can be credited in full for public works even if the employer contributes less (or not at all) on private construction, but only where plans give both immediate participation and "essentially immediate vesting," which the bill defines as vesting within the first 500 hours worked.
Any director-issued exemptions to the annualization requirement that were granted before January 1, 2026 are explicitly revoked by the bill.
The bill requires craft- or classification-specific collective bargaining agreements to be filed with the Department of Industrial Relations for prevailing-wage determinations, and it allows a typescript draft to be filed temporarily with a penalty-of-perjury statement if the agreement has not yet been finalized.
Section-by-Section Breakdown
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Expanded list of employer payments that count as per diem wages
Subdivision (a) enumerates the categories the statute treats as employer-funded per diem wages: health and welfare, pension, vacation, travel, subsistence, certain apprenticeship/training costs tied to Section 3093, LMCA worker-protection program costs that are directed at public-works law enforcement, CBA administrative fees when required by an employer's CBA, and catchall categories for similar purposes. The practical effect is to make common fringe payments explicit elements of prevailing per diem calculations, which reduces interpretive wiggle room but pushes employers to document the connection between payments and the categories listed.
What counts as an "employer payment" for credit purposes
Subdivision (b) pins down three concrete mechanisms an employer can use to claim credit: irrevocable contribution rates to trustees/third parties; anticipated actual costs when there is an enforceable written commitment to a financially responsible plan; and payments to the California Apprenticeship Council under Section 1777.5. For compliance teams, the key takeaway is that both form (an irrevocable contribution or an enforceable written commitment) and substance (the payment is to an eligible entity or program) matter — casual or contingent promises will not suffice.
When credits are allowed and limits on reducing hourly wages
Subdivision (c) makes credits available against the per diem obligation but forbids credit for benefits already mandated by other state or federal law, for monitoring/enforcement payments outside LMCA-authorized programs, and for CBA administrative fees unless the employer is actually bound by the agreement. It also preserves prevailing straight-time and overtime hourly obligations, while carving a narrow path for lowering an hourly rate in exchange for higher employer payments: any such trade requires (i) collective-bargaining criteria to authorize the shift, (ii) that the combined hourly rate and employer payment meet the director’s prevailing rates, and (iii) that the employer payment contribution be irrevocable except for mistakes. That structure is aimed at balancing benefit funding flexibility with protection of workers’ hourly wages.
Timing, quarterly credit rule, and annualization of credits
Subdivision (d) allows employers to claim credit even when a contribution or payment is not made in the same pay period, provided the employer regularly makes those contributions or payments at least quarterly. Subdivision (e) requires that, when employer payments on public works are higher than on private construction, credits generally be computed on an annualized basis unless narrow exceptions apply (for example, enforceable private obligations, project labor agreements, or payments to the Apprenticeship Council). This creates a uniformity test to prevent cherry-picking higher fringe rates for public projects unless the employer can show equivalent private commitments or documented project-level obligations.
Defined contribution exception, evidentiary burden, and enforcement tools
Subdivision (e)(2) creates a specific exception for defined contribution pension plans that permit immediate participation and essentially immediate vesting; employers may claim full credit for hourly contributions to such plans even if private-sector contributions are lower. The bill defines "essentially immediate vesting" as vesting within the first 500 hours. Subdivision (e)(3) puts the burden on employers to demonstrate correct calculation of credits and grants the Labor Commissioner the authority to demand employee-hours and employer-payment records for private construction — and to deny credits if the employer fails to provide adequate documentation. Practically, this shifts the evidentiary burden to contractors and makes document retention and traceability central to defense against audit challenges.
Revocation of prior annualization exemptions
Subdivision (f) expressly revokes any exemptions to the annualization rule that the director issued before January 1, 2026. That revocation removes grandfathered departures from uniform annualized treatment, signaling an administrative reset that will require employers who had relied on earlier exemptions to re-evaluate credit calculations and compliance strategies.
Collective bargaining agreement filing rules for prevailing wage determinations
Subdivision (g) directs representatives of crafts or classifications to file fully executed collective bargaining agreements with the Department of Industrial Relations, and permits filing a typescript of a final draft with a sworn statement about its effective date if not yet formalized. Modifications and extensions that affect per diem wages or holidays must also be filed. The clause also clarifies that failure to file is not by itself grounds to overturn a prevailing wage determination when the information used was correct — which prioritizes substance over procedural defects, but still makes timely filings an important part of evidence used to set prevailing rates.
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Explore Employment in Codify Search →Who Benefits and Who Bears the Cost
Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- Union trust funds and third‑party benefit administrators — the statute explicitly recognizes many benefit payments (health, pension, apprenticeship contributions, and certain administrative fees) as creditable per diem wages, which can increase fund inflows tied to public-works projects.
- Employers party to clear collective bargaining agreements — where CBAs authorize specific employer payments and set irrevocable contribution rates, employers gain predictable crediting rules and a defensible basis to structure benefit contributions into bid pricing.
- Apprenticeship and training programs — the bill credits apprenticeship and training costs (when reasonably related) and payments to the California Apprenticeship Council, which may strengthen funding streams for workforce development on public projects.
- Public owners and procuring agencies — clearer statutory categories and filing requirements reduce ambiguity in prevailing wage determinations, helping agencies evaluate bids and defend procurement decisions against challenges.
Who Bears the Cost
- Non‑union and open‑shop contractors — they face higher compliance and documentation costs to justify credits and may lose competitive advantage if they cannot replicate benefit structures that qualify for credit.
- Small contractors — the evidentiary burdens (annualization, record production, irrevocable contribution requirements) and potential for denied credits raise administrative costs and cash-flow complications for smaller firms with limited HR/finance capacity.
- Labor Commissioner/Department of Industrial Relations — enforcement will demand audits of private-construction records, calculation reviews, and adjudication of disputes, increasing workload without an appropriation included in the text.
- Public owners and project managers — procurement and bid evaluation will become more complex as CBAs, fringe contribution schedules, and annualized comparisons need verification during bid review and contract administration.
Key Issues
The Core Tension
The bill balances two valid goals that pull in opposite directions: enable employers and unions to fund benefits and training through non‑cash employer payments (supporting long-term worker welfare and bargaining flexibility) while preserving transparent, comparable hourly wage baselines and preventing employers from disguising cash wages as fringe payments to undercut prevailing wage protections. The statute privileges benefit-crediting but only if backed by clear, enforceable structures and documentation — which means compliance certainty comes at the cost of administrative complexity and litigation risk.
AB 889 tightens the legal framework for crediting employer-funded benefits as per diem wages but leaves several implementation questions that can drive disputes. The statute uses qualitative standards — for example, that training costs be "reasonably related" to contributions or that other payments be "similar" to listed categories — which invite litigation over whether a particular program falls inside or outside the statutory list.
The annualization requirement prevents cherry-picking higher public-works fringes, but it also requires careful accounting across private and public projects; disagreements over the proper measurement period, allocation method, or what counts as an "enforceable obligation" can prolong audits.
The enforcement mechanics shift the evidentiary burden onto employers, who must produce records of hours and payments on private construction upon request. While that boosts enforceability, it raises privacy, record-keeping, and compliance-cost concerns, especially for subcontractors who may not control payroll or benefits data.
The defined-contribution vesting exception (vesting within the first 500 hours) closes one loophole but creates another administrative threshold to monitor. Finally, revoking director-issued exemptions as of a hard date disrupts any business practices that relied on past administrative leniency — a compliance cliff that could trigger recalculations, retroclaims, or bid disputes on projects in flight.
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