Second Injury Fund PTD: Preexisting Occupational Diseases Are Not “Compensable Injuries” Under § 287.220.3(2)(a)a(ii)

Introduction

Treasurer v. Penney (Mo. banc Apr. 29, 2025) addresses a recurring post-2014 Second Injury Fund (“Fund”) question: when a worker seeks permanent total disability (“PTD”) benefits from the Fund, may earlier occupational diseases (including repetitive-use injuries) count as the “qualifying preexisting disability” under the statutory pathway requiring a disability that is a “direct result of a compensable injury as defined in section 287.020”?

Respondent Diana Penney worked nearly four decades as a pharmacy technician and developed three work-related occupational diseases: low back, neck/upper back, and (as the “primary injury”) carpal tunnel syndrome/ulnar nerve entrapment. An ALJ and the Labor and Industrial Relations Commission found Penney PTD based on the combined effect of the primary injury and the earlier occupational diseases, awarding Fund benefits. The Treasurer (Fund custodian) appealed, arguing the two preexisting occupational diseases could not qualify under § 287.220.3(2)(a)a(ii).

Summary of the Opinion

The Supreme Court of Missouri reversed. The Court held that preexisting occupational diseases do not qualify as “preexisting disabilities” under § 287.220.3(2)(a)a(ii) because that category is limited to disabilities that are the direct result of “a compensable injury as defined in section 287.020,” and § 287.020 (particularly § 287.020.3(5)) excludes occupational disease “in any form.” Consequently, Penney lacked a qualifying preexisting disability under category (ii), and her earlier occupational diseases could not be combined with the primary injury to impose Fund PTD liability.

Analysis

Precedents Cited

  • Treasurer of Mo. v. Parker, 622 S.W.3d 178 (Mo. banc 2021): Used for (1) standard-of-review framing (statutory interpretation is de novo) and (2) context for § 287.220.3’s post-2014 Fund limitations and insolvency-driven legislative purpose. It also supplies terminology that the “subsequent compensable work-related injury” is often called the “primary injury.”
  • Klecka v. Treasurer of Mo., 644 S.W.3d 562 (Mo. banc 2022): Reinforces that PTD status and entitlement to Fund benefits are “entirely distinct questions,” emphasizing strict statutory gateway requirements to reach Fund liability.
  • State ex rel. KCP & L Greater Mo. Operations Co. v. Cook, 353 S.W.3d 14 (Mo. App. 2011): Provides the opinion’s key historical-statute architecture: after 2005, occupational disease compensability was “divorc[ed]” from the accident/injury definitions in § 287.020, and § 287.067 became an “independent, detailed scheme” for occupational diseases.
  • Cosby v. Treasurer of Mo., 579 S.W.3d 202 (Mo. banc 2019) and § 287.800.1: Support strict construction of workers’ compensation statutes, anchoring the Court’s refusal to expand category (ii) beyond its text.
  • Robinson v. Hooker, 323 S.W.3d 418 (Mo. App. 2010): Supplies a frequently quoted definition of “strict construction” (no broader application than the plain terms; presume nothing not expressed).
  • Bachtel v. Miller Cnty. Nursing Home Dist., 110 S.W.3d 799 (Mo. banc 2003): Cited for purposive tools—legislative “object” and the “problems sought to be remedied”—used here to contextualize the 2013 Fund-liability narrowing.
  • Hyde Park Housing P'ship v. Dir. of Revenue, 850 S.W.2d 82 (Mo. banc 1993): Employed to avoid rendering statutory language superfluous and to presume the legislature did not include idle verbiage.
  • Staples v. A.P. Green Fire Brick Co., 307 S.W.2d 457 (Mo. 1957): Illustrates the pre-2005 era when courts sometimes “enlarged” accidental injury to include occupational disease under a liberal construction regime.
  • Pierson v. Treasurer of Mo., 126 S.W.3d 386 (Mo. banc 2004) and Treasurer of Mo.-Custodian of Second Inj. Fund v. Witte, 414 S.W.3d 455 (Mo. banc 2013) (dissent): Provide the historical purpose of the Fund (encouraging employment of disabled workers by limiting employer liability to the primary injury) and the combination-injury concept.
  • Weibrecht v. Treasurer of Mo., 659 S.W.3d 588 (Mo. banc 2023) and Swafford v. Treasurer of Mo., 659 S.W.3d 580 (Mo. banc 2023) (dissent): Restate plain-meaning interpretation and the presumption against superfluous statutory language.
  • Dickemann v. Costco Wholesale Corp., 550 S.W.3d 65 (Mo. banc 2018), Sell v. Ozarks Med. Ctr., 333 S.W.3d 498 (Mo. App. 2011), and State ex rel. Womack v. Rolf, 173 S.W.3d 634 (Mo. banc 2005) (dissent): Used to argue that “strict construction” cannot justify ignoring words the legislature included.
  • Marbury v. Madison, 5 U.S. 137 (1803) (dissent): Invoked to suggest a separation-of-powers concern with legislative directives about interpretive methodology, though the dissent does not resolve it.

Legal Reasoning

The Court’s reasoning is primarily textual and structural, supported by legislative history:

  1. Statutory gateway question. Fund PTD liability (for post-2014 injuries) requires at least one qualifying preexisting disability. Under the pathway at issue—category (ii)—the preexisting disability must be a “direct result of a compensable injury as defined in section 287.020.” § 287.220.3(2)(a)a(ii).
  2. 2005 “divorce” between accidental injury and occupational disease. Relying on Cook, the Court explains that post-2005 Missouri law treats compensability of accidental injuries (§ 287.020) and occupational diseases (§ 287.067) as distinct statutory schemes. This framing matters because category (ii) references only § 287.020.
  3. Plain text of § 287.020 excludes occupational diseases. The Court emphasizes § 287.020.3(5): “These terms shall in no case except as specifically provided in this chapter be construed to include occupational disease in any form.” In the majority’s view, this confirms § 287.020 is the accidental-injury definition section and is not where occupational disease is “defined.”
  4. Anti-superfluity and strict construction. The Court refuses to treat category (ii)’s reference to § 287.020 as implicitly including occupational diseases merely because § 287.067 (elsewhere in Chapter 287) makes occupational diseases compensable. Doing so would, in the Court’s analysis, collapse the legislature’s decision to name § 287.020 specifically and would broaden category (ii) beyond its “plain terms,” contrary to strict construction (citing Cosby and Robinson) and anti-superfluity principles (citing Hyde Park Housing P'ship).
  5. Legislative purpose: narrowing Fund exposure post-insolvency. The Court treats the 2013 creation of § 287.220.3 as a deliberate effort to restrict Fund liability after insolvency concerns (as recognized in Parker), and interprets the exclusion of § 287.067 from category (ii) as consistent with that aim.
  6. Key limiting rule. The holding is categorical: preexisting occupational diseases cannot qualify under category (ii) and therefore “cannot be considered in combination with the primary injury” to determine PTD for Fund purposes. The Court separately notes that occupational disease can still serve as the primary injury under § 287.220.3(1).

Impact

Doctrinal effect: The decision clarifies that, for § 287.220.3(2)(a)a(ii), “compensable injury as defined in section 287.020” means compensable accidental injury, not occupational disease. This narrows a common route to Fund PTD where the worker’s medical history consists primarily of repetitive-use conditions.

Practical litigation consequences:

  • Claimants with multiple occupational diseases may be unable to “stack” preexisting occupational diseases with a primary injury to reach Fund PTD under category (ii), increasing the importance of alternative qualifying pathways (e.g., category (iii) or (iv), when factually available) and careful proof of statutory elements.
  • Parties can expect more disputes about how to classify prior conditions (accidental injury vs. occupational disease) and whether any preexisting disability can be tied to § 287.020 rather than § 287.067.
  • The decision may pressure legislative reconsideration if the perceived outcome (excluding preexisting occupational disease while allowing occupational disease as a primary injury) is viewed as inconsistent with the Fund’s historic purpose—an argument stressed by the dissent.

Institutional effect: The Court continues a post-2005 interpretive approach emphasizing strict construction and text-based limitation of Fund liability, aligning with the broader trend of treating § 287.220.3 as a narrow eligibility statute rather than a remedial catchall.

Complex Concepts Simplified

  • Second Injury Fund (Fund): A state fund intended to pay for disability caused by the combination of a new work injury with significant preexisting disability, so employers are responsible only for the disability from the new injury.
  • Primary injury: The later “subsequent compensable work-related injury” that triggers analysis of Fund liability (often the last injury in time).
  • Preexisting disability under category (ii): A qualifying preexisting condition that must be (1) medically documented, (2) at least 50 weeks of PPD, and (3) “a direct result of a compensable injury as defined in section 287.020.”
  • Accidental injury vs. occupational disease: Missouri workers’ compensation treats them as separate statutory categories: accidental injuries are governed by § 287.020; occupational diseases (including repetitive motion) are governed by § 287.067.
  • Strict construction: Courts apply the statute no more broadly than the text clearly allows; they do not infer coverage that the legislature did not clearly express.
  • Prevailing factor: The primary causal factor (more than any other factor) producing the medical condition and disability—used as a compensability standard in both accident and occupational disease contexts, but within different statutory schemes.
  • PPD vs. PTD: Permanent partial disability (some lasting impairment) vs. permanent total disability (inability to compete in the open labor market). A worker can be PTD yet still fail Fund eligibility if statutory prerequisites are unmet.

Conclusion

Treasurer v. Penney establishes a clear limitation on Fund PTD claims: preexisting occupational diseases (including repetitive-use injuries) cannot satisfy § 287.220.3(2)(a)a(ii) because that category is confined to compensable accidental injuries “as defined in section 287.020.” The ruling strengthens the post-2013, post-2005 statutory divide between accidental injury and occupational disease and further constrains Fund exposure through strict, text-based eligibility rules—while the dissent highlights the tension this creates with the Fund’s historic purpose and the “except as specifically provided in this chapter” clause in § 287.020.3(5).