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Johns Manville

Private company

WARN notices since 2024

2
First: Aug 30, 2024

Workers affected since 2024

190
Across 2 notices

Executive changes, last 12 months

0
0 appointments, 0 departures

Last event

Feb 6, 2026
Plant closurePlant closure: CA

Workers affected over time

Cumulative workers in WARN notices since 2024

050100150200Jan '24Jan '25Jan '26190

Leadership

No executive changes on record.

  1. layoffs from Apr 19, 2026

    Plant closure

    Plant closure: CA

    Johns Manville filed a WARN notice with the California WARN list on Feb 6, 2026 covering 90 workers. The site closes on Apr 19, 2026.

    Site: CA

    Workers affected: 90

    Source: California WARN list, filed Feb 6, 2026

  2. layoffs from Nov 3, 2024

    WARN notice

    WARN notice: CA

    Johns Manville filed a WARN notice with the California WARN list on Aug 30, 2024 covering 100 workers. The layoffs take effect on Nov 3, 2024.

    Site: CA

    Workers affected: 100

    Source: California WARN list, filed Aug 30, 2024

  3. layoffs from Sep 25, 2023

    Plant closure

    Plant closure: CA

    Johns Manville filed a WARN notice with the California WARN list on Jul 21, 2023 covering 54 workers. The site closes on Sep 25, 2023.

    Site: CA

    Workers affected: 54

    Source: California WARN list, filed Jul 21, 2023

  4. layoffs from Nov 7, 2021

    Plant closure

    Plant closure: CA

    Johns Manville filed a WARN notice with the California WARN list on Sep 7, 2021 covering 260 workers. The site closes on Nov 7, 2021.

    Site: CA

    Workers affected: 260

    Source: California WARN list, filed Sep 7, 2021

  5. WARN notice

    WARN notice: TN

    Johns Manville filed a WARN notice with the Tennessee WARN list covering 25 workers. The layoffs take effect on May 21, 2020.

    Site: TN

    Workers affected: 25

    Source: Tennessee WARN list, filed May 21, 2020

  6. layoffs from Jun 1, 2020

    WARN notice

    WARN notice: Willows, CA

    Johns Manville filed a WARN notice with the California WARN list on Mar 26, 2020 covering 13 workers in Willows. The layoffs take effect on Jun 1, 2020.

    Site: Willows, CA

    Workers affected: 13

    Source: California WARN list, filed Mar 26, 2020

  7. layoffs from Mar 16, 2015

    WARN notice

    WARN notice: Willows, CA

    Johns Manville filed a WARN notice with the California WARN list on Jan 21, 2015 covering 40 workers in Willows. The layoffs take effect on Mar 16, 2015.

    Site: Willows, CA

    Workers affected: 40

    Source: California WARN list, filed Jan 21, 2015

  8. WARN notice

    WARN notice: BERLIN, NJ

    JOHNS MANVILLE filed a WARN notice with the New Jersey WARN list covering 170 workers in BERLIN. The layoffs take effect on Jan 31, 2009.

    Site: BERLIN, NJ

    Workers affected: 170

    Source: New Jersey WARN list, filed Jan 31, 2009

Last verified Nov 8, 2026