§ 1904.11 Recording criteria for work-related tuberculosis cases.
Basic requirement. If any of your employees has been occupationally exposed to anyone with a known case of active tuberculosis (TB), and that employee subsequently develops a tuberculosis infection, as evidenced by a positive skin test or diagnosis by a physician or other licensed health care professional, you must record the case on the OSHA 300 Log by checking the “respiratory condition” column.
Implementation —(1) Do I have to record, on the Log, a positive TB skin test result obtained at a pre-employment physical? No, you do not have to record it because the employee was not occupationally exposed to a known case of active tuberculosis in your workplace.
May I line-out or erase a recorded TB case if I obtain evidence that the case was not caused by occupational exposure? Yes, you may line-out or erase the case from the Log under the following circumstances:
The worker is living in a household with a person who has been diagnosed with active TB;
The Public Health Department has identified the worker as a contact of an individual with a case of active TB unrelated to the workplace; or
A medical investigation shows that the employee's infection was caused by exposure to TB away from work, or proves that the case was not related to the workplace TB exposure.
Text reproduced verbatim from the eCFR, edition 2026-01-01, retrieved 2026-07-19. A US Government work in the public domain under 17 U.S.C. 105.
1 OSHA interpretation of § 1904.11
How OSHA has applied this section
Letters of Interpretation are OSHA answering specific questions on specific facts. They explain the requirement above but cannot create additional obligations, and a later letter can supersede an earlier one. Newest first.
Search all Part 1904 interpretations →Part-level source: eCFR API, Title 29 Part 1904.
Not legal advice. This page republishes 29 CFR Part 1904 as published by the eCFR and explains it. The recordkeeping duty is the employer’s. Where the rule requires judgement, Job13 says so rather than guessing — run your own case through the free check.