Mueller Industries, Inc. (MLI)
Copper tube and brass products maker, 38% union. Read October 20, 2026 from the annual report for the period ending December 27, 2025, filed February 25, 2026. Ranked 153 of the 222 Industrials companies read so far, by the share within reach now.
Within reach now
17%
End of 2028
30%
Employees, annual report
4,832
Leading staffing pattern
Nonferrous Metal (except Aluminum) Production and Processing
Share of the working time within reach, long-run pace, four times in five
- Now17%
- End of 202726%
- End of 202830%
- End of 203031%
What changes for its people by the end of 2028, by its industries' figures
- Stays with people 66%
- Becomes checking a model's work 27%
- Handed over with lighter checks 5%
The filing states 4,832 employees, 1,820 union, making copper tube, fittings, brass rod and climate components with nothing counted by segment, so the split is by description.
The figures on this page come from the company's own annual report and from BLS staffing patterns for its industries, never from a roster. They are estimates with a stated method. Nothing here says what the company will do: within reach is not a forecast of jobs lost or of savings.
What follows from the reading
Share of working time within reach of AI, on the long-run pace at four in five: 17% now, 26% at the end of 2027, 30% at the end of 2028, 31% at the end of 2030. By the patterns, the work is about 31% desk work, 12% people work and 57% body work. These are the site's industry estimates weighted by the shares below: estimates with a stated method and range, not a forecast of what the company will do. By the same patterns, at the end of 2028 about 66% of the working time stays with people (conversation, in-person and hands-on work), 27% becomes checking a model's work and 5% could be handed over with lighter checks, from the industries' own figures, not the company's roles.
Headcount
4,832 employees as of December 27, 2025 (stated). The filing counts no employees by country; it lists union contracts at U.S. plants and at U.K. and Mexico operations, and the United States is 79% of revenue.
The filing: “As of December 27, 2025, the Company employed approximately 4,832 employees, of which approximately 1,820 were represented by various unions.”
The workforce as industry patterns
| Pattern | Share | Reason, from the filing |
|---|---|---|
| Nonferrous Metal (except Aluminum) Production and Processing | 60% | By description (c): copper tube, brass rod and other copper and brass products are drawn and extruded at its mills, the SIC code being nonferrous rolling and extruding; no count by segment. |
| Fabricated Metal Product Manufacturing (3321, 3322, 3325, 3326, and 3329 only) | 25% | By description (c): fittings, valves, forgings and impact extrusions in the piping systems and industrial metals segments are fabricated metal products; no count by segment. |
| Machinery Manufacturing (3331, 3332, 3334, and 3339 only) | 15% | By description (c): the climate segment, 12% of revenue, makes refrigeration and air conditioning components, machinery under NAICS; no count by segment. |
What the filing says about the workforce: About 4,832 employees, about 1,820 represented by unions under contracts at eight U.S. plants and at U.K. and Mexico operations; research and development spending is not material.
Companies read with the same leading pattern
Other companies whose largest staffing pattern is also Nonferrous Metal (except Aluminum) Production and Processing, largest first, each read from its own annual report. Within reach now and at the end of 2028, long-run pace, four in five.
- ATI Inc. (ATI, 7,600 employees)17% now, 28% by 2028
What the filing says about AI
0 sentences in the filing name AI. The filing names AI in no sentence.
Its annual reports, year by year
Sentences naming AI in each annual report, counted by one rule, beside the median report in the Index that year. Each count links its filing. Every company, by year and sector
- Fiscal 20210median 0
- Fiscal 20220median 0
- Fiscal 20230median 1
- Fiscal 20240median 4
- Fiscal 20250median 10
Headcount by filing year
As reported in each year's annual report, with the filing. A year marked not read had no figure the reading could take from the report's text.
| Period | Employees | Filed | Filing |
|---|---|---|---|
| 2025-12-27 | 4,832 | 2026-02-25 | 10-K |
| 2024-12-28 | 5,168 | 2025-02-26 | 10-K |
| 2023-12-30 | 4,509 | 2024-02-28 | 10-K |
| 2022-12-31 | 5,137 | 2023-02-28 | 10-K |
| 2021-12-25 | 5,337 | 2022-02-23 | 10-K |
| 2020-12-26 | 5,007 | 2021-02-24 | 10-K |
| 2019-12-28 | 4,964 | 2020-02-26 | 10-K |
| 2018-12-29 | 5,134 | 2019-02-27 | 10-K |
| 2017-12-30 | 4,125 | 2018-02-28 | 10-K |
| 2016-12-31 | 4,244 | 2017-03-01 | 10-K |
| 2016-02-24 | 4,104 | 2016-02-24 | 10-K |
| 2014-12-27 | 3,850 | 2015-02-24 | 10-K |
| 2013-12-28 | 3,925 | 2014-02-26 | 10-K |
| 2012-12-29 | 3,775 | 2013-02-27 | 10-K |
| 2011-12-31 | 3,750 | 2012-02-28 | 10-K |
| 2010-12-25 | 3,600 | 2011-02-22 | 10-K |
| 2009-12-26 | 3,300 | 2010-02-23 | 10-K |
| 2008-12-27 | 4,086 | 2009-02-24 | 10-K |
| 2007-12-29 | 4,875 | 2008-02-26 | 10-K |
| 2006-12-30 | 4,700 | 2007-02-28 | 10-K |
| 2005-12-31 | 4,800 | 2006-03-15 | 10-K |
| 2004-12-25 | 4,500 | 2005-03-04 | 10-K |
| 2003-12-27 | 3,500 | 2004-03-01 | 10-K |
| 2002-12-28 | 3,600 | 2003-03-24 | 10-K |
| 2001-12-29 | 3,750 | 2002-03-25 | 10-K |
| 2000-12-30 | 4,300 | 2001-03-26 | 10-K |
| 1999-12-25 | not read | 2000-03-23 | 10-K |
| 1998-12-26 | not read | 1999-03-24 | 10-K |
| 1997-12-27 | not read | 1998-03-20 | 10-K |
| 1996-12-28 | not read | 1997-03-24 | 10-K |
| 1995-12-30 | not read | 1996-03-22 | 10-K |
| 1994-12-31 | not read | 1995-03-17 | 10-K |
| 1993-12-25 | not read | 1994-03-23 | 10-K |
Limits of this reading
- No count by segment or plant; the split across metal processing, fabricated products and climate components is by description.
Source: the company's annual report on EDGAR, accession 0000089439-26-000008, the filing. Read by Claude Fable 5.1 under rubric version 1, by the method. A company can write to info@stratussc.com to have its reading checked against its filing.
The report on Mueller Industries, Inc., $29
This page as a document to keep, with what it does not show: the share within reach at every date on three paces and two reliabilities, a typical workforce of this shape at the stated headcount role by role and task by task (the industries' staffing, never the company's roster), where to start, what changes for the people and what they would learn, every sentence in the filing that names AI, the headcount by year, the companies read with the same leading pattern, the method and a citation line. To print or save as a PDF, open again in your browser for a year.
See the report, $29See the sample first: Walmart's report is free
Questions about this company
- How much of Mueller Industries, Inc.'s working time is within reach of AI?
- An estimated 17% now and 30% by the end of 2028, on METR's long-run pace at four in five, from the workforce Mueller Industries, Inc.'s own annual report describes and BLS staffing patterns for its industries, never from a roster. It is an estimate with a stated method. It is not a forecast of jobs lost or of savings, and it says nothing about what the company will do.
- How many people does Mueller Industries, Inc. employ?
- 4,832 as of December 27, 2025, as its annual report for the period ending December 27, 2025 states.
- What kinds of work make up Mueller Industries, Inc.'s workforce?
- Read from its annual report as a blend of 3 industry staffing patterns, the largest Nonferrous Metal (except Aluminum) Production and Processing; by those patterns the work is about 31% desk work, 12% people work and 57% body work. Each share has a one-sentence reason on this page that can be checked against the filing.
- What does Mueller Industries, Inc.'s annual report say about AI?
- 0 sentences in the filing name AI. Its annual reports for fiscal 2021 to 2025 name it in 0, 0, 0, 0 and 0 sentences, year by year. They are counted and quoted on this page, never judged: a count says how much a filing talks about AI, not what the company does with it.
- How is this estimated?
- Claude Fable 5.1 read the annual report under the Index's written rubric (version 1) on October 20, 2026: the stated headcount, the share in the U.S. when stated, and the workforce as a blend of industry staffing patterns. The estimates are the site's industry estimates weighted by those shares, from O*NET tasks with estimated lengths and METR's measurements of how long a task AI models can finish. A company can write to info@stratussc.com to have its reading checked against its filing.
Embed these figures on your site
A small card with the share of working time within reach now and at the end of 2027, 2028 and 2030, the date and a link back. Free under CC BY 4.0; the card carries the credit.