By Amanda Leon, founder of OilMoney.io. Houston-raised, came up in the Houston marketing team of Vallourec, and has run Unrth, a brand and growth studio for oil and gas and industrial companies, since 2017, with her boots on client locations in Midland and Odessa. Last reviewed November 5, 2026.
From January 2020 through late October 2026, oil and gas employers filed 26 WARN notices in Harris County, Texas, covering 8,632 workers, based on our one-by-one read of the state's list. The most recent is Baker Hughes, filed July 1, 2026, for 174 workers. By year: 2026, 174 workers; 2025, 696 workers; 2024, 500 workers; 2022, 168 workers; 2021, 162 workers; 2020, 6,932 workers. The full Texas list, how we read it, and its limits are in Texas oil and gas layoff notices.
What Harris County Shows
Harris County is mostly Houston, so this list reads differently from the Permian's. Halliburton's 2020 filings are the largest here, and the notices since 2024 include some of the biggest recent ones in the state: Chevron and Hess, Marathon Oil, Baker Hughes, and Encino. When a Houston address files, the people affected may be the ones who approve vendors, so check in on your contacts. Start with getting known by oil and gas supply chain and what happens to a house account when an operator gets bought.
The largest filers in the county:
Halliburton: 4,510 workers.
ExxonMobil / XTO: 677 workers.
Chevron: 575 workers.
Marathon Oil: 500 workers.
Seadrill: 465 workers.
Baker Hughes: 358 workers.
Every Oil and Gas Filing in Harris County
2026: 1 notice, 174 workers
July 1, 2026: Baker Hughes, Houston (Harris County), 174 workers.
2025: 2 notices, 696 workers
July 21, 2025: Chevron, Houston (Harris County), 575 workers.
June 18, 2025: Encino Energy, Houston (Harris County), 121 workers.
2024: 1 notice, 500 workers
October 29, 2024: Marathon Oil, Houston (Harris County), 500 workers.
2022: 2 notices, 168 workers
October 1, 2022: Quarter North Energy, Houston (Harris County), 43 workers.
July 19, 2022: ION Geophysical, Houston (Harris County), 125 workers.
2021: 1 notice, 162 workers
February 8, 2021: Seadrill, Houston (Harris County), 162 workers.
2020: 19 notices, 6,932 workers
December 4, 2020: Sable Permian Resources, Houston (Harris County), 100 workers.
December 2, 2020: ExxonMobil / XTO, Spring (Harris County), 677 workers.
October 15, 2020: Transocean, Houston (Harris County), 100 workers.
August 11, 2020: Seadrill, Houston (Harris County), 168 workers.
July 16, 2020: Exterran, Houston (Harris County), 174 workers.
July 8, 2020: Borusan Mannesmann Pipe, Baytown (Harris County), 114 workers.
June 5, 2020: Seadrill, Houston (Harris County), 135 workers.
May 4, 2020: Halliburton, Houston (Harris County), 984 workers.
April 28, 2020: Halliburton, Houston (Harris County), 26 workers (3 notices).
April 21, 2020: Energy Transfer, Houston (Harris County), 95 workers.
April 21, 2020: Enterprise Offshore Drilling, Houston (Harris County), 76 workers.
April 15, 2020: Baker Hughes, Houston (Harris County), 184 workers.
April 15, 2020: Diamond Offshore, Houston (Harris County), 102 workers.
April 6, 2020: Vallourec, Houston (Harris County), 144 workers.
March 19, 2020: Tenaris, Baytown (Harris County), 223 workers.
March 18, 2020: Halliburton, Houston (Harris County), 3,500 workers.
January 27, 2020: Sheridan Production, Houston (Harris County), 130 workers.
If One of These Is Your Customer
Call your contact as a person first and a seller second. Ask how they're doing, and who's making decisions now. People remember who checked on them. If you'd rather see what a buyer sees when he looks you up, get your Bison Walk-Around. The Tailgate, one letter a month from the patch, signs up at the bottom of any page.
Sources and As-Of Dates
Texas Workforce Commission, WARN notices: yearly files for 2020 through 2026, downloaded November 2, 2026.
Notices kept as oil and gas from employer names, read one by one. Worker counts are as filed. Smaller companies usually aren't covered.
The Warm Walk-In™ is an original method created by Amanda Leon and owned by The Valours Creative Innovation LLC.
