Employer · WARN Act history · Manufacturing
Master Lock Company
325 workers across 1 WARN notice, primarily in WI - recorded in the current PlainLayoffs dataset.
- 325
- Workers cut
- 1
- WARN notice
- 1
- State
- 325
- Avg / notice
Master Lock Company has 1 recorded WARN filing affecting 325 workers
According to WARN Act filings submitted to state workforce agencies, Master Lock Company has 1 recorded filing covering 325 workers across 1 state, primarily WI, the 628th-largest recorded WARN footprint among 7,009 tracked employers. WARN notices cover qualifying reported events, so this record is not a complete count of the employer's workforce changes.
Master Lock Company is a minor share of Manufacturing WARN activity — 0.2% of the sector's 211,445 workers across 776 employers, ranking #92 in Manufacturing.
DOL WARN employer filing desk
Employer MASTER-LOCK- · Master Lock Company 325 workers · 1 filings
NOTC-SINGLE · WORK-MID · PHOTO-UNK · RUNWAY-OVER · STAT-SINGLE · BOOK-SINGLE · TYPE-CLOSE
- NOTC-SINGLE 1 filing
- WORK-MID #628
- PHOTO-UNK No peer
- RUNWAY-OVER 78d
- STAT-SINGLE WI
- BOOK-SINGLE 1 agency
- TYPE-CLOSE 1 closure
Stamps derive from filed notice_date, effective_date, workers_affected, state agency source, and filing type in this dataset, not a prediction of future layoffs.
Employer Profile
Not all layoffs appear in WARN data, see our methodology for the federal + state coverage thresholds. Latest filing: Aug 2023.
WARN Notice History
2023
Milwaukee, WI · Manufacturing
Effective: Nov 3, 2023
325
workers
Filed Aug 17, 2023
Four checks on this Master Lock Company filing
What is the largest Master Lock Company WARN filing on record? ▼
The largest row is the facility closure filed for Milwaukee, WI on Aug 17, 2023, covering 325 workers in Manufacturing.
Where were Master Lock Company's WARN notices filed? ▼
This is a one-event record from Wisconsin DWD; the named location is Milwaukee, not a company-wide headcount change. States represented in this record: WI.
Does Master Lock Company's filing history show a recurring pattern? ▼
One filing cannot establish a recurring layoff cadence. It records a specific WARN-covered event and should not be read as a forecast of this employer's workforce.
How much advance notice appears in Master Lock Company's record? ▼
The measurable notice runway clears the federal 60-day baseline; use the dated filing history to see which location and event produced it.
See also: WI WARN filings · Manufacturing industry WARNs · WARN Act guide
Source: State WARN Act layoff registries Master Lock Company notice history aggregated from state workforce agency filings · September 2026 A WARN filing is a required notice, not a judgment of the employer's management or finances. Coverage follows states with structured public registries; this public-record summary is not legal advice, financial advice, or employment advice.
Every figure on PlainLayoffs is rendered directly from public WARN Act filings and state workforce agency records, no number is typed in by an editor. This employer's notice history is rendered directly from state WARN Act filings. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 2026. A WARN filing is a legally required notice, not a judgment of a company's management or financial health; rankings here reflect filed notice volume only.