OSHA has inspected Mastermold, LLC 9 times in Wisconsin since 1998.
The latest one began on Apr 11, 2024 after a complaint, in Johnson Creek.
Those inspections ended with 22 citation items: 14 serious and 8 other-than-serious.
Penalties were first proposed at $68,893 and now stand at $36,351, 47% lower after settlements or reviews.
Permit-required confined spaces comes up most often in these citations: 6 items under 1910.146.
How that compares: the median penalty per cited inspection for manufacturing employers since 2015 is $4,500, and Mastermold, LLC averages $13,348 (2 cited inspections).
Mastermold, LLC also files yearly injury logs with OSHA, summarized below.
It reported 1 severe injury to OSHA since 2015.
Citation items per year, by inspection date.
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From the Form 300A summaries employers file with OSHA each year. Rate = recordable cases per 100 full-time workers.
In 2025, the Johnson Creek site logged 13 recordable injuries or illnesses among about 262 workers: 4.4 per 100 full-time workers, against a median of 2.6 for its industry. Those cases cost 19 days away from work.
Site and year
Workers
Cases
Days-away cases
Rate
Industry median
MasterMold LLC Johnson Creek
Johnson Creek · 2025
262
13
2
4.4
2.6
MasterMold LLC
Mauston · 2025
100
8
0
8.6
1.4
MasterMold
Mauston · 2023
120
13
3
10.4
2.6
Severe injury reports
Employers must report any work-related amputation, in-patient hospitalization or loss of an eye to OSHA within 24 hours. 1 report on file.
Feb 7, 2023, Johnson Creek: Amputation · amputations · fingertip(s)
An employee was opening and closing the drill bit of a cordless drill. The tool activated and caught the employee's right glove. The employee suffered an injury to the right hand that necessitated the medical amputation of the employee's right little fingertip.
The rules behind these citations
Current text from the Code of Federal Regulations. Some citations were issued under older wording.
(d) Exposure monitoring—(1) General. (i) Each employer who has a workplace covered by this standard shall monitor employees to determine their exposure to formaldehyde.
(h) Employee information and training. (1) Employers shall provide employees with effective information and training on hazardous chemicals in their work area at the time of their initial assignment, and whenever a new chemical hazard the employees have not previously been trained about is introduced into their work area. Information and training may be designed to cover categories of hazards (e.g., flammability, carcinogenicity) or specific chemicals. Chemical-specific information must always be available through labels and safety data sheets.
(1) The test instrument must have an effective audio-warning device, or a visual-warning device in the form of a screen tracing, that indicates when the test subject fails to hold his or her breath during the test. The test must be terminated and restarted from the beginning when the test subject fails to hold his or her breath during the test. The test subject then may be refitted and retested.
Source: U.S. Department of Labor, OSHA enforcement data. A citation is OSHA's allegation; employers can contest it, and the status column shows where each item stands. Something wrong on this page? Tell us.
