20 CFR § 725.404 - Development of evidence—general.

---
identifier: "/us/cfr/t20/s725.404"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 725.404 - Development of evidence—general."
title_number: 20
title_name: "Employees' Benefits"
section_number: "725.404"
section_name: "Development of evidence—general."
chapter_name: "OFFICE OF WORKERS' COMPENSATION PROGRAMS, DEPARTMENT OF LABOR"
subchapter_number: "B"
subchapter_name: "FEDERAL COAL MINE HEALTH AND SAFETY ACT OF 1969, AS AMENDED"
part_number: "725"
part_name: "CLAIMS FOR BENEFITS UNDER PART C OF TITLE IV OF THE FEDERAL MINE SAFETY AND HEALTH ACT, AS AMENDED"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 301; 28 U.S.C. 2461 note (Federal Civil Penalties Inflation Adjustment Act of 1990); Pub. L. 114-74 at sec. 701; Reorganization Plan No. 6 of 1950, 15 FR 3174; 30 U.S.C. 901  902(f), 921, 932, 936; 33 U.S.C. 901  42 U.S.C. 405; Secretary's Order 10-2009, 74 FR 58834."
regulatory_source: "65 FR 80054, Dec. 20, 2000, unless otherwise noted."
cfr_part: "725"
---


# 725.404 Development of evidence—general.

(a) *Employment history.* Each claimant shall furnish the district director with a complete and detailed history of the coal miner's employment and, upon request, supporting documentation.

(b) *Matters of record.* Where it is necessary to obtain proof of age, marriage or termination of marriage, death, family relationship, dependency (see subpart B of this part), or any other fact which may be proven as a matter of public record, the claimant shall furnish such proof to the district director upon request.

(c) *Documentary evidence.* If a claimant is required to submit documents to the district director, the claimant shall submit either the original, a certified copy or a clear readable copy thereof. The district director or administrative law judge may require the submission of an original document or certified copy thereof, if necessary.

(d) *Submission of insufficient evidence.* In the event a claimant submits insufficient evidence regarding any matter, the district director shall inform the claimant of what further evidence is necessary and request that such evidence be submitted within a specified reasonable time which may, upon request, be extended for good cause.