Postal Workers Asbestos Exposure
Executive Summary
Postal workers occupy an unusual position in asbestos documentation: the exposure is recorded in federal enforcement files rather than in occupational-health research. The U.S. Occupational Safety and Health Administration has cited the United States Postal Service repeatedly for asbestos violations at facilities in Massachusetts, Oregon, Minnesota, Illinois, Maryland and Colorado, and the citation text in the most recent of those cases states that a 2023 operation at a Norwood, Massachusetts facility disturbed intact floor tiles containing 24% chrysotile asbestos while an employee cut embedded bolts, hammered them into the tiles and drilled new floor holes.[1] What does not exist is a published epidemiologic study of postal workers. No cohort study, no mortality analysis, and no mesothelioma case series specific to U.S. postal employees was located in federal or biomedical sources.[2] That absence is a gap in the research literature, not a finding that the work is safe — nobody has measured the outcome, which is a different thing from measuring it and finding nothing.
The documented exposure pathway is the building, not the mail. Asbestos-containing floor tile and the mastic beneath it appear in citation after citation, disturbed by custodians doing routine housekeeping over broken tile, by maintenance mechanics removing and replacing tile, and by employees moving heavy fixtures anchored into asbestos flooring. A separate pathway — mail-handling machinery — is documented once: a 1981 NIOSH health hazard evaluation at a Pittsburgh bulk mail center found brake, clutch and sheet rock materials containing 20 to 75% chrysotile asbestos, though air sampling on the survey days detected no airborne fibers.[2]
Postal employees are federal employees, so an asbestos-related disease claim does not go through state workers' compensation. It goes to the Department of Labor's Office of Workers' Compensation Programs under the Federal Employees' Compensation Act on Form CA-2, and it succeeds or fails on medical evidence. The two published postal asbestos decisions of the Employees' Compensation Appeals Board that could be located were both denied — not because exposure was disbelieved, but because the medical reports did not contain a reasoned opinion connecting the diagnosis to the documented exposure.[3][4] Workers and families considering a claim should read those two decisions as a checklist of what the file needs to contain.
At-a-Glance
Postal worker asbestos exposure at a glance:
- 24% chrysotile in disturbed floor tile — OSHA's 2024 citation of a Norwood, Massachusetts postal facility describes an employee cutting, hammering and drilling into asbestos-containing flooring on or about November 30, 2023 without a prior exposure assessment[1]
- $276,546 proposed, $70,000 paid — OSHA initially proposed penalties of $276,546 against USPS for that inspection; in a formal settlement with a final order dated January 2, 2025, eleven willful items were withdrawn and two items were resolved as serious violations totaling $70,000[5]
- Six named facilities across six states — OSHA's own citation text documents prior USPS asbestos citations at Portland, Oregon; Lakeville, Minnesota; Herrin, Illinois; Matheson, Colorado; and Parkville, Maryland, in addition to the Norwood case[1][6]
- Custodians were not told where the asbestos was — a repeat citation affirmed by formal settlement found custodians at a Parkville, Maryland work floor performing housekeeping over broken and missing floor tile that exposed asbestos-containing mastic, without having been made aware of its location[6]
- No initial exposure monitoring — a 2021 citation alleged USPS did not perform required initial monitoring for custodians and maintenance mechanics who removed and replaced tiles containing asbestos[7]
- Mail equipment contained asbestos in 1981 — six bulk samples of brake, clutch and sheet rock material at a Pittsburgh bulk mail center ran 20 to 75% chrysotile, while 22 personal air samples detected no fibers at a limit of detection of 0.01 fibers per cubic centimeter[2]
- No epidemiologic study exists — no cohort study, mortality analysis or mesothelioma case series specific to postal workers was found; the evidence base is enforcement records and individual compensation appeals[2]
- Claims run under FECA, not state law — postal workers file Form CA-2 with OWCP and must establish five elements set out at 20 C.F.R. § 10.115, the last of which is causal relationship[8]
- Three-year clock, with a latency rule — 5 U.S.C. § 8122(a) requires filing within three years, but § 8122(b) provides that in a case of latent disability the clock does not begin until the employee has a compensable disability and is aware of its causal relationship to employment[9]
- Deferred maintenance is ongoing — a USPS Office of Inspector General audit report issued in 2025 recorded broken floor tiles potentially containing asbestos among facility deficiencies found during site visits[10]
Key Facts
| Measure | Finding (Source) |
|---|---|
| Asbestos content, floor tile | 24% chrysotile — intact floor tiles disturbed during a November 30, 2023 operation at a Norwood, MA postal facility; OSHA inspection 1713346.015, citations issued May 24, 2024[1] |
| Asbestos content, mail equipment | 20–75% chrysotile — six bulk samples of brake, clutch and sheet rock materials, Bulk Mail Center, Pittsburgh, PA; NIOSH HETA 81-293-983, survey conducted July 28–30, 1981[2] |
| Measured airborne fibers, 1981 survey | None detected in 22 personal breathing-zone samples of clerks, mail handlers and welders; analytical limit of detection 0.01 f/cc. This is a measurement on those days at that facility, not a general finding about postal work[2] |
| OSHA penalties, Norwood inspection | $276,546 initially proposed → $70,000 current. Eleven willful items were deleted in a formal settlement; two items stand as serious violations at $35,000 each. Final order January 2, 2025[5] |
| Standards cited, Norwood | 29 C.F.R. § 1926.1101(f)(2)(i) — no competent-person exposure assessment before the operation; and § 1926.1101(k)(3)(ii)(B) — employee not informed of the location and quantity of asbestos-containing material[1][11] |
| Repeat citation, Parkville, MD | Repeat violation of 29 C.F.R. § 1910.1001(j)(3)(iii), issued October 27, 2017, penalty increased from $997 to $1,908 on formal settlement, final order October 18, 2018; predicate was a violation at Matheson, CO affirmed as a final order October 23, 2016[6] |
| Epidemiologic cohort study | None published. No NIOSH mortality study, no USPS OIG or GAO disease study, and no published cohort of mesothelioma or lung disease in postal workers was located[2] |
| Documented mesothelioma case in a postal worker | None located in published sources. The two published postal asbestos decisions of the ECAB involve pleural plaques and asbestosis (2003) and lung cancer (2017); a FECA mesothelioma death claim was located, but the decedent was a Navy shipyard employee, not a postal worker[3][4][12] |
| Claim form | Form CA-2, Notice of Occupational Disease and Claim for Compensation. Additional occupational-disease evidence requirements appear at 20 C.F.R. § 10.116, including the disease-specific CA-35 checklist series[13] |
| Elements of proof | Five, at 20 C.F.R. § 10.115: timely filing; federal-employee status; that the injury, disease or death occurred; that it occurred in performance of duty; and causal relationship. The regulation states that neither the condition manifesting during federal employment nor the claimant's belief that employment caused it is sufficient in itself[8] |
| Filing deadline | Three years from injury or death under 5 U.S.C. § 8122(a), subject to the latent-disability rule at § 8122(b) and to exceptions where the immediate superior had actual knowledge within 30 days or written notice was given[9] |
| Death claim timing | A timely disability claim satisfies the time requirements for a death claim based on the same injury — 5 U.S.C. § 8122(c). This is a concrete reason to file a CA-2 at diagnosis[9] |
Where is the asbestos in a postal facility?
The documented source is the floor. Across every OSHA asbestos citation of the Postal Service located for this page, the material at issue is asbestos-containing floor tile, the mastic adhesive beneath it, or both.
The most detailed record is OSHA inspection 1713346.015 at a Postal Service facility at 1 Central Street, Norwood, Massachusetts, opened November 30, 2023. According to the citation, an employee moved an "accountable cage" that was anchored into asbestos-containing flooring. The work "disturbed intact floor tiles containing 24% chrysotile asbestos and created dust and debris by cutting embedded bolts, hammering the cut bolts into the tiles, and then drilling new floor holes."[1] OSHA alleged the employer had not ensured a competent person conducted an exposure assessment before the operation began, and had not informed the employee that the workroom floor and mastic contained asbestos.[11]
The citation text is also the best available evidence that this was not isolated. In support of the characterization, OSHA listed prior Postal Service citations under the equivalent general-industry standard at three other locations: a repeat-serious violation at 1020 SE 7th Avenue, Portland, Oregon (inspection date December 15, 2022); an other-than-serious violation at 20711 Holt Avenue, Lakeville, Minnesota, affirmed as a final order June 15, 2020; and a serious violation at 200 South Park Avenue, Herrin, Illinois, affirmed as a final order July 18, 2018.[1]
A separate case concerns housekeeping. At a Parkville, Maryland facility on or about April 28, 2017, OSHA found custodians "potentially exposed to ACM and/or PACM while performing housekeeping duties on the main work floor that contained broken and/or missing floor tile exposing the asbestos containing mastic," with the employer not having made them aware of the locations.[6] That citation was classified repeat, its predicate being a violation of the same standard at a Matheson, Colorado workplace affirmed as a final order on October 23, 2016. It was resolved by formal settlement with the penalty increased from $997 to $1,908.
A 2021 citation alleged that initial exposure monitoring was never performed for "custodians and maintenance mechanics" who "removed and replaced tiles that contained Asbestos."[7] A 2017 citation alleged warning signs were not posted at approaches to regulated areas.[14]
A note on what these records prove. An OSHA citation is an allegation until it becomes a final order. Several of the items described above were withdrawn or deleted in settlement, and this page says so where that happened. The items affirmed as final orders — Matheson, Colorado in 2016; Herrin, Illinois in 2018; Lakeville, Minnesota in 2020; and the Parkville repeat citation in 2018 — are the strongest evidence, because they were adjudicated rather than merely charged.
What about mail-handling equipment and vehicles?
One federal field study addresses equipment. In 1981, NIOSH conducted a health hazard evaluation at the Bulk Mail Center in Pittsburgh, Pennsylvania, a facility employing roughly 650 clerks and mail handlers, with the survey conducted July 28–30, 1981. Six bulk samples of brake, clutch and sheet rock materials from the mail center "were found to contain 20-75% chrysotile asbestos" — that is, asbestos was a component of the conveyor machinery itself.[2]
The same evaluation collected 22 personal breathing-zone air samples from clerks, mail handlers and welders. "No asbestos fibers were detected in any of the samples. The analytical limit of detection was 0.01 fibers/cubic centimeter."[2] Both results belong on this page. Asbestos-containing components were present in mail-processing equipment; airborne fibers were not detected during routine operations on the days sampled at that one facility. Neither result generalizes to maintenance work on that machinery, to other facilities, or to other years.
Postal vehicles are an open question. No source documenting asbestos in postal delivery-vehicle brake linings was located for this page. The Postal Service operated long-life vehicles built during the era when asbestos brake linings were common, and vehicle maintenance is a recognized exposure route in other occupations, but neither of those observations is a source about postal vehicles specifically. It is listed here as a gap, not as a finding.
What the evidence does not show
This section exists because the honest answer to "how much mesothelioma do postal workers get?" is that nobody has published the study.
Searches of NIOSH, OSHA, the Government Accountability Office, the USPS Office of Inspector General and the biomedical literature returned no epidemiologic cohort study, no mortality analysis, and no mesothelioma case series specific to U.S. postal workers.[2] The 1981 NIOSH evaluation is the only federal occupational-health field study of asbestos at a postal facility located, and it was an exposure survey, not a health-outcomes study.
Nor was a published, citable mesothelioma case in a postal worker located. The two published ECAB decisions involving postal asbestos claims concern other diagnoses:
- ECAB Docket No. 03-2261 (decided December 2, 2003) — a postal painter at Oakland, California with 35 years of service who, in his own words, worked in a facility "built in 1969 with asbestos and lead throughout the building in the walls, ceilings, floor tiles and air ducts." His claim, based on reported pleural plaques, was denied.[3]
- ECAB Docket No. 17-0677 (issued September 13, 2017) — a retired general clerk who filed a Form CA-2 on January 21, 2016 alleging breathing problems and lung cancer from asbestos and dust exposure over 27 years at the Processing & Distribution Center in Dallas, Texas. The Board affirmed the denial, finding she "has not met her burden of proof."[4]
A FECA mesothelioma death claim does appear in the published decisions, but the decedent was a Department of the Navy employee connected to the San Francisco Naval Shipyard, not a postal employee.[12] It is discussed below for what it establishes about deadlines, and it should not be cited as postal evidence.
Why the absence of a study is not reassurance. An unstudied occupation produces no risk estimate in either direction. What the record does establish is exposure opportunity: asbestos-containing material present in postal buildings and equipment, disturbed during ordinary work, with employees repeatedly found not to have been told where it was. Exposure to asbestos causes most mesotheliomas,[15] and that causal relationship was established in other populations; it does not have to be re-established occupation by occupation before an individual claim can succeed. An individual FECA claim turns on that individual's exposure and medical evidence, not on whether a cohort study of the trade exists.
How do postal workers file an asbestos claim?
Postal employees are federal employees and are not covered by state workers' compensation. Claims run under the Federal Employees' Compensation Act, 5 U.S.C. § 8101 et seq., administered by the Department of Labor's Office of Workers' Compensation Programs.
The form. An asbestos-related disease develops over more than one work shift, which makes it an occupational disease rather than a traumatic injury. The correct form is Form CA-2, Notice of Occupational Disease and Claim for Compensation. Form CA-1 is for traumatic injury and is the wrong form here.
The five elements. 20 C.F.R. § 10.115 states that "[e]ach claim for compensation must meet five requirements before OWCP can accept it," and that "[t]he evidence submitted must be reliable, probative and substantial." The requirements are:
- The claim was filed within the time limits specified by the FECA;
- The injured person was, at the time of injury, an employee of the United States;
- The fact that an injury, disease or death occurred;
- The injury, disease or death occurred while the employee was in the performance of duty; and
- The medical condition claimed is causally related to the claimed injury, disease or death.[8]
The fifth element is where asbestos claims are decided, and the regulation is explicit about what will not satisfy it: "Neither the fact that the condition manifests itself during a period of Federal employment, nor the belief of the claimant that factors of employment caused or aggravated the condition, is sufficient in itself to establish causal relationship."[8] The same section places responsibility on the claimant to submit a medical report from the attending physician.
Occupational-disease specifics. 20 C.F.R. § 10.116 adds requirements that apply only to occupational disease claims: the employee must submit the detailed information described on Form CA-2 and "should submit any checklist (Form CA-35, A-H) provided by the employer," which OWCP developed to address particular occupational diseases, and the medical report should include the information specified on the checklist for the disease claimed.[13]
What the medical report has to do. Both located postal decisions failed on this point rather than on exposure. In the 2003 painter's case, OWCP asked the employing agency for exposure data and air-sample surveys and the type, frequency and duration of asbestos exposure in each job held; directed the claimant to provide a comprehensive treating-physician report addressing symptoms, examination, tests, diagnosis and a causation opinion with medical reasons; and then referred him to a board-certified pulmonologist for a second opinion. The claim was denied when the second-opinion physician found no objective evidence of asbestos-related disease.[3] The 2017 clerk's claim was denied because the submitted reports did not establish the causal connection.[4] The practical lesson from both: a radiology finding and a work history, standing alone, do not carry a FECA claim. A physician has to state the connection and explain the reasoning behind it.
How long do postal workers have to file?
The general rule. 5 U.S.C. § 8122(a) provides that "[a]n original claim for compensation for disability or death must be filed within 3 years after the injury or death," unless the immediate superior had actual knowledge of the injury or death within 30 days, or written notice was given within 30 days.[9]
The latency rule. Three years from exposure would defeat nearly every asbestos claim, because these diseases take decades to appear. § 8122(b) addresses this directly: "In a case of latent disability, the time for filing claim does not begin to run until the employee has a compensable disability and is aware, or by the exercise of reasonable diligence should have been aware, of the causal relationship of the compensable disability to his employment."[9] The clock is keyed to awareness of the connection, not to the date of exposure.
Worry is not awareness. In the Navy mesothelioma death case, the Board noted that "mere concern about a history of exposure to dangerous substances without positive medical evidence does not begin the three-year period for filing a claim."[12]
But the clock does run. That same case is a caution. The employee died of malignant mesothelioma on December 30, 1999, and the evidence showed the family first learned of the diagnosis and its cause in December 1999. The widow filed her Form CA-5 death-benefits claim on June 12, 2005 — more than five years later. The Board held: "Appellant did not file a timely claim for death benefits in accordance with 5 U.S.C. § 8122," and affirmed the denial.[12] The claim failed on the calendar, never reaching the medical merits.
File at diagnosis. 5 U.S.C. § 8122(c) provides that "[t]he timely filing of a disability claim because of injury will satisfy the time requirements for a death claim based on the same injury."[9] A CA-2 filed while the worker is living protects the survivors' later death claim on the same condition. That is the single most useful sentence in the statute for a family facing a mesothelioma diagnosis.
Frequently Asked Questions
Do postal workers get mesothelioma? There is no published study measuring mesothelioma rates in postal workers, and no citable individual case in a postal worker was located in published federal decisions. What is documented is exposure opportunity: asbestos-containing floor tile, mastic and equipment components in postal facilities, disturbed during ordinary work. The absence of a study is an absence of research, not evidence that the risk is zero.
Which postal jobs are named in the asbestos citations? Custodians and maintenance mechanics appear most often, because tile removal, replacement and housekeeping over damaged tile are the activities that disturb the material. Clerks and mail handlers appear in the 1981 NIOSH equipment survey. One citation involved an employee moving a fixture anchored into asbestos flooring, which is not a maintenance job at all.
Does state workers' compensation cover postal workers? No. Postal employees are federal employees and file under the Federal Employees' Compensation Act with the Office of Workers' Compensation Programs, not with a state workers' compensation board.
Which form do I file? Form CA-2, Notice of Occupational Disease and Claim for Compensation. Asbestos-related disease develops over more than one shift, which makes it an occupational disease. Form CA-1 is for traumatic injury and is the wrong form. Survivors filing after a death use Form CA-5 or CA-5b.
Is it too late if I was exposed decades ago? Not necessarily. Under 5 U.S.C. § 8122(b), for a latent disability the three-year clock does not start at exposure. It starts when the employee has a compensable disability and is aware, or reasonably should have been aware, of the causal relationship between that disability and the employment. Once that awareness exists, the clock does run, and one published FECA mesothelioma death claim was denied as untimely on exactly that basis.
Why were the claims in the published decisions denied? In both located postal decisions, the medical evidence did not contain a reasoned opinion connecting the diagnosed condition to the documented workplace exposure. 20 C.F.R. § 10.115 states plainly that the claimant's belief that employment caused the condition is not sufficient in itself. The causal opinion has to come from a physician, with the reasoning stated.
Should I file a claim even though I am still working? Filing at diagnosis has a specific statutory benefit. Under 5 U.S.C. § 8122(c), a timely disability claim satisfies the time requirements for a later death claim based on the same injury, which protects the family's claim regardless of what happens afterward.
Are asbestos problems in postal buildings a thing of the past? The most recent detailed citation on this page concerns an operation in November 2023, and a USPS Office of Inspector General audit report issued in 2025 recorded broken floor tiles potentially containing asbestos among facility deficiencies found during site visits. Asbestos-containing flooring remains in service in older postal buildings.
Quick Statistics
- 24% — chrysotile content of the intact floor tiles disturbed during the November 30, 2023 operation at the Norwood, Massachusetts postal facility[1]
- 20–75% — chrysotile content of six bulk samples of brake, clutch and sheet rock material at the Pittsburgh Bulk Mail Center, 1981[2]
- 0 — asbestos fibers detected in 22 personal breathing-zone air samples during that 1981 survey, at a detection limit of 0.01 f/cc[2]
- ~650 — clerks and mail handlers employed at the Pittsburgh Bulk Mail Center at the time of the 1981 NIOSH evaluation[2]
- $276,546 → $70,000 — initially proposed versus final OSHA penalties for the Norwood inspection, after eleven willful items were withdrawn in settlement[5]
- 6 — postal facilities in six states named in OSHA asbestos citation records reviewed for this page: Norwood MA, Portland OR, Lakeville MN, Herrin IL, Matheson CO, Parkville MD[1][6]
- 5 — elements a FECA claimant must establish under 20 C.F.R. § 10.115[8]
- 3 years — the FECA filing limit under 5 U.S.C. § 8122(a), subject to the latent-disability rule at § 8122(b)[9]
- 0 — published epidemiologic cohort studies of asbestos-related disease in U.S. postal workers located for this page[2]
Related Pages
- Asbestos Exposure — how asbestos fibers cause disease and which materials carry them
- OSHA Asbestos Regulations — the asbestos standards cited in every postal violation on this page
- Asbestos Abatement — the regulated process for removing asbestos-containing flooring and mastic
- Filing an Asbestos Exposure Claim — the claim process, including systems other than FECA
- Tile Setters — the trade that installed the floor tile and mastic at issue here
- Mesothelioma Wrongful Death Claims — survivor claims after an asbestos-related death
- Mesothelioma — diagnosis, staging and treatment of the disease most specific to asbestos exposure
External Links
- Danziger & De Llano — asbestos exposure — overview of occupational asbestos exposure and the claim process
- Mesothelioma Lawyer Center — asbestos laws and regulations — summary of the OSHA asbestos standards cited on this page
- Mesothelioma.net — treatment information, patient resources and support services
- Mesothelioma Attorney — background on the legal process for asbestos disease claims
- U.S. Department of Labor — FECA frequently asked questions — the agency's own guidance on filing under the Federal Employees' Compensation Act
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Violation Detail, Citation 01001A, 29 CFR 1926.1101(f)(2)(i), Inspection 1713346.015, United States Postal Service, 1 Central Street, Norwood, MA. Occupational Safety and Health Administration. Issued May 24, 2024.
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 Health Hazard Evaluation Report HETA 81-293-983, Bulk Mail Center, Pittsburgh, Pennsylvania, National Institute for Occupational Safety and Health. Survey conducted July 28-30, 1981; report issued October 1981. Scanned document: the PDF text layer carries OCR artifacts (it renders "ashestos" for "asbestos" and "bra~e" for "brake" in the passage quoted above). Quotations on this page give the corrected reading.
- ↑ 3.0 3.1 3.2 3.3 Docket No. 03-2261, U.S. Postal Service, Post Office, Oakland, CA, Employees' Compensation Appeals Board, U.S. Department of Labor. Issued December 2, 2003.
- ↑ 4.0 4.1 4.2 4.3 D.M. and U.S. Postal Service, Processing & Distribution Center, Dallas, TX, Docket No. 17-0677, Employees' Compensation Appeals Board, U.S. Department of Labor. Issued September 13, 2017.
- ↑ 5.0 5.1 5.2 Inspection Detail 1713346.015, United States Postal Service, Norwood, MA, Occupational Safety and Health Administration. Boston South Area Office; opened November 30, 2023; formal settlement, final order January 2, 2025.
- ↑ 6.0 6.1 6.2 6.3 6.4 Violation Detail, Citation 02002A, 29 CFR 1910.1001(j)(3)(iii), Inspection 1228681.015, United States Postal Service, Parkville, MD. Occupational Safety and Health Administration. Repeat violation issued October 27, 2017; final order October 18, 2018.
- ↑ 7.0 7.1 Violation Detail, Citation 01001, 29 CFR 1910.1001(d)(2)(i), Inspection 1537592.015, United States Postal Service. Occupational Safety and Health Administration. Issued August 27, 2021; item deleted on settlement, Review Commission September 14, 2022.
- ↑ 8.0 8.1 8.2 8.3 8.4 20 C.F.R. § 10.115, What evidence is needed to establish a claim?, Office of Workers' Compensation Programs, U.S. Department of Labor. Code of Federal Regulations, 2025 annual edition, via govinfo.gov.
- ↑ 9.0 9.1 9.2 9.3 9.4 9.5 9.6 5 U.S.C. § 8122, Time for making claim, Office of the Law Revision Counsel, U.S. House of Representatives.
- ↑ Deferred Maintenance of Postal Service Facilities, Report Number 25-037-R26, Office of Inspector General, United States Postal Service.
- ↑ 11.0 11.1 Violation Detail, Citation 01002A, 29 CFR 1926.1101(k)(3)(ii)(B), Inspection 1713346.015, United States Postal Service, Norwood, MA. Occupational Safety and Health Administration. Issued May 24, 2024.
- ↑ 12.0 12.1 12.2 12.3 E.B., claiming as widow of N.B., and Department of the Navy, Naval Sea Systems Command-Shipyards, Philadelphia, PA, Docket No. 07-629, Employees' Compensation Appeals Board, U.S. Department of Labor. Issued July 18, 2007. Navy case, cited for FECA timeliness doctrine only.
- ↑ 13.0 13.1 20 C.F.R. § 10.116, What additional evidence is needed in cases based on occupational disease?, Office of Workers' Compensation Programs, U.S. Department of Labor. Code of Federal Regulations, 2025 annual edition, via govinfo.gov.
- ↑ Violation Detail, Citation 03003, 29 CFR 1910.1001(j)(3)(i), Inspection 1223605.015, United States Postal Service. Occupational Safety and Health Administration. Issued May 16, 2017; formal settlement July 24, 2017.
- ↑ Asbestos Exposure and Cancer Risk, National Cancer Institute. "Exposure to asbestos causes most mesotheliomas."