How we source our data

Every public figure on RoleMath traces to an official source. This page lists those sources, what we use each one for, and how current it is. We do not invent data and we do not cite sources that are not on this list.

Where our data comes from

How current the data is

Update cadence and freshness: pay data from BLS OEWS is released no more often than annually; BLS employment projections are released no more often than annually; O*NET is updated periodically and not continuously; official vendor certification pages are re-checked each time we build. Each source carries a last-verified date so you can see when we last confirmed it. None of these sources is a live, real-time feed, so we do not present any figure as a live or guaranteed-current number.

What these figures mean (and don't)

Important framing: all pay and outlook figures are occupation-level context from BLS and O*NET, and they are not personal figures. They describe an occupation across the whole economy. They are not a salary you are promised, not a per-credential earnings figure, and never a personal guarantee, and no wage shown here is a number you are owed.

Sources

• U.S. Bureau of Labor Statistics — May 2025 OEWS Current Tables: https://www.bls.gov/oes/current/
• U.S. Bureau of Labor Statistics — Occupational Employment and Wage Statistics: https://www.bls.gov/oes/
• U.S. Bureau of Labor Statistics — Employment Projections Occupational Data Table 1.2: https://www.bls.gov/emp/ind-occ-matrix/occupation.xlsx
• U.S. Bureau of Labor Statistics — Occupational Outlook Handbook: https://www.bls.gov/ooh/
• U.S. Bureau of Labor Statistics — BLS Public Data API: https://www.bls.gov/bls/api_features.htm
• National Center for ONET Development — ONET 30.3 Database: https://www.onetcenter.org/database.html
• National Center for ONET Development — ONET Database: https://www.onetcenter.org/database.html
• National Center for ONET Development — ONET OnLine: https://www.onetonline.org/
• U.S. Bureau of Labor Statistics — Employment Projections Skills Data: https://www.bls.gov/emp/data/skills-data.htm
• CompTIA — CompTIA Certifications Catalog: https://www.comptia.org/en-us/certifications/
• Cisco — Cisco Current Exams List: https://www.cisco.com/site/us/en/learn/training-certifications/exams/list.html
• Amazon Web Services — AWS Certification Exam Guides: https://docs.aws.amazon.com/aws-certification/
• Microsoft — Microsoft Learn Catalog API: https://learn.microsoft.com/api/catalog/?type=mergedCertifications%2Cexams
• Google Cloud — Google Cloud Certifications Catalog: https://cloud.google.com/learn/certification?hl=en
• Project Management Institute — PMI Certifications Catalog: https://www.pmi.org/certifications/
• EC-Council — EC-Council Train and Certify Catalog: https://www.eccouncil.org/train-certify/
• Red Hat — Red Hat Certifications: https://www.redhat.com/en/services/certifications
• ISC2 — ISC2 Cybersecurity Certifications: https://www.isc2.org/Certifications
• ISACA — ISACA Credentialing (CISA / CISM): https://www.isaca.org/credentialing
• Linux Foundation — Linux Foundation Certification Catalog: https://training.linuxfoundation.org/certification-catalog/
• RoleMath evidence boundaries and blocked claims
• RoleMath citation architecture

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