US call-center jobs, 1990-2026: dataset behind the maccus.fr investigation of November 14, 2026
FR: https://maccus.fr/centres-appels-americains-emplois-chatgpt/
EN: https://maccus.fr/en/us-call-center-jobs-chatgpt/
Author: Marc Winer, MACCUS (maccus.fr). Built November 14, 2026.

SOURCES (all retrieved November 14, 2026)
- US Bureau of Labor Statistics, Current Employment Statistics (CES), API v1:
  CES6056142001 telephone call centers (NAICS 56142), all employees, seasonally adjusted (thousands)
  CEU6056142001 same, not seasonally adjusted; CES6056140001 business support services; CES0500000001 total private.
  https://data.bls.gov/timeseries/CES6056142001 . US government work, public domain.
- BLS Quarterly Census of Employment and Wages (QCEW) open data, NAICS 56142, private ownership:
  https://data.bls.gov/cew/data/api/{year}/a/industry/56142.csv (2019, 2022, 2025 annual averages; 2026 Q1).
- BLS Occupational Employment and Wage Statistics (OEWS), national May estimates 2019, 2022, 2024, 2025:
  https://www.bls.gov/oes/special-requests/oesm{19,22,24,25}nat.zip
- Indeed Hiring Lab, job postings tracker, US by sector: https://github.com/hiring-lab/job_postings_tracker
  Licence CC BY 4.0 (Indeed Hiring Lab).
- US Census Bureau, 2022 NAICS descriptions (56142 definition).

FILES
- ces_monthly.csv: month, call centers SA (thousands), call centers NSA, business support services SA, total private SA,
  and which series carry the BLS preliminary flag that month. January 1990 to September 2026 (October 2026 for the
  private total). Only September 2026 is preliminary for call centers.
- annual_changes.csv: December level and December-to-December change for call centers (jobs and percent), with the
  private-sector change for comparison; last row = December 2025 to September 2026.
- qcew_states_2019_2025.csv: call-center employment by state, 2019 and 2025 annual averages (private), change and
  percent change, disclosure flags (N = suppressed). Includes DC, Puerto Rico and the Virgin Islands; the article
  counts the 50 states only.
- oews_national.csv: national employment and wages for customer service representatives (43-4051), telemarketers
  (41-9041), switchboard operators (43-2011), office and administrative support (43-0000) and all occupations.
- indeed_customer_service_weekly.csv: Indeed customer service postings index and all-postings index (seasonally
  adjusted, February 1, 2020 = 100), first of each month plus the latest date.
- summary.json: every figure quoted in the article.

METHOD NOTES
- NAICS 56142 covers establishments answering calls, telemarketing and order taking for clients, or serving other
  establishments of the same company. In-house service desks inside other businesses are counted in their employer's
  industry, so this is the call-center industry, not all customer service work (see oews_national.csv for that).
- CES figures after March 2025 are not yet benchmarked to the QCEW census; QCEW Q1 2026 is within 2% of CES.
- The split before and after ChatGPT uses November 2022 (the CES survey week includes November 12; ChatGPT was released
  November 30, 2022).
- Payroll data exclude independent contractors and work done outside the United States.
