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Career evidence research methods

Read how a career-data claim must be sampled, reviewed, and limited before publication.

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Methodology explains a preparation signal; it does not turn the result into a hiring prediction.

8 pages

Resume evidence

Application readiness

Jobs and company signals

Interview evidence

Research with the source attached

Use official labour, occupation, and disclosure data as a baseline. Publish a Refresh result only after the observed records, denominator, date, and exclusions are ready.

What can official sources answer now, and what still requires observed Refresh data?

Verified public facts

830 approximatelyOccupations covered2026-08-27

The May 2025 OEWS release provides employment and wage estimates for approximately 830 occupations across national, state, metropolitan, nonmetropolitan, and selected industry views.

How to use it
Occupation-and-location wage context, with the release period shown.
What this data cannot establish
A company-specific salary, a candidate-specific offer, or current job-posting demand.
31.0Database release2026-08-27

O*NET 31.0 organizes worker and job information across skills, knowledge, abilities, tasks, work activities, work context, occupations, and related domains.

How to use it
A defensible vocabulary for role requirements and work evidence categories.
What this data cannot establish
That every task or skill applies to a particular opening or candidate.
2026-08-27

Korea’s NCS public data describes work through the competency units required to perform it, providing a Korean reference alongside occupation data built for the U.S. labour market.

How to use it
Korean role and competency framing without translating U.S. occupation labels literally.
What this data cannot establish
A vacancy count, hiring trend, salary, or employer-specific requirement.
2026-08-27

SEC data APIs provide company submission history and extracted XBRL data as JSON without authentication or API keys.

How to use it
Linking a U.S. public company profile to its filing history and source documents.
What this data cannot establish
That every company has SEC filings or that a filing confirms workplace quality.
2026-08-27

Open DART makes DART filing documents available as XML and exposes major disclosures, ownership reports, securities filings, and periodic-report data through APIs.

How to use it
Linking a Korean disclosure subject to filing dates, report types, and original documents.
What this data cannot establish
A complete private-company profile or a prediction of future hiring.
38 countriesOECD member countries covered where applicable2026-08-27

The OECD Employment Database covers all 38 OECD countries where applicable and includes employment, unemployment, working-time, wage-dispersion, and wage-gap series.

How to use it
Cross-country labour-market context when the same indicator definition and period are preserved.
What this data cannot establish
A direct occupation-level salary comparison when countries use different classifications or wage concepts.

How the data is handled

  1. Start with the authority

    Link the agency page that defines the dataset before summarising a number or term.

  2. Keep unlike data apart

    Do not merge occupations, geographies, filing periods, currencies, or sample units until a documented crosswalk exists.

  3. Publish the denominator

    Every percentage needs its eligible record count, exclusions, observation date, and calculation rule.

Definitions that travel with the result

Official baseline
A published definition or statistic from the agency responsible for the source.
Observed result
A result calculated from a dated, documented set of Refresh records. It is not available merely because a landing page exists.
Reference period
The time period represented by a value, kept separate from the date Refresh retrieved it.

Results that still require observed data

Research coverage status

Which questions have official context, observed results, or neither?

Awaiting observed data
Required result fields
  • Source URL

    The exact page or record used for the observation.

    string · required
  • Publisher

    The organisation responsible for the source.

    string · required
  • Observed at

    The date Refresh retrieved or checked the record.

    date · required
  • Reference period

    The period the value or observation describes.

    string · required
  • Unit of analysis

    What one counted record represents, such as one resume, posting, filing, or review.

    string · required
  • Count

    The numerator after deduplication and exclusions.

    number · required
  • Denominator

    The eligible records used to calculate a share or rate.

    number · required
  • Metric definition

    The exact inclusion, exclusion, and calculation rule.

    string · required
Publish only when
Publish an observed result only after the source set, eligible denominator, exclusions, and reproducible calculation are stored together.
Awaiting observed data
Method and sources are available. No observed Refresh result has been published for this question.

What this data cannot establish

  • No Refresh user, resume, job, application, or outcome count is included in this layer.
  • Official data can define context; it cannot supply a Refresh product result or predict an individual hiring outcome.

How to use it

  • Read the definition and reference period before comparing a value.
  • Open the source link when a number affects a career or application decision.

Official data sources

  • Occupational Employment and Wage StatisticsU.S. Bureau of Labor Statistics2026-08-27
    Coverage
    Employment and wage estimates by occupation, geography, and industry, published with an annual May reference date.
    Boundary
    OEWS estimates cover wage and salary workers in nonfarm establishments. They do not represent a specific company offer or an individual candidate.
  • O*NET DatabaseU.S. Department of Labor, Employment and Training Administration2026-08-27
    Coverage
    Worker and job characteristics, including occupations, tasks, work activities, skills, knowledge, and work context.
    Boundary
    O*NET describes occupations in the U.S. economy. It does not reproduce one employer’s job description or prove that a candidate has a skill.
  • Korea National Competency Standards dataHuman Resources Development Service of Korea2026-08-27
    Coverage
    Korean competency standards and competency-unit information used to describe work by the capabilities required to perform it.
    Boundary
    NCS is a competency standard, not a live count of vacancies, resumes, interviews, or hiring outcomes.
  • EDGAR submissions and XBRL data APIsU.S. Securities and Exchange Commission2026-08-27
    Coverage
    Public filing history by filer and standardized XBRL facts from financial statements, delivered as JSON.
    Boundary
    Filing data describes what an entity disclosed. Periods, units, taxonomies, amendments, and entity identity must be reconciled before comparison.
  • Open DART corporate disclosure APIFinancial Supervisory Service2026-08-27
    Coverage
    DART filing documents, major disclosure items, ownership reports, and periodic-report financial data.
    Boundary
    Filers are responsible for their statements. Corrected filings can change values, and coverage depends on disclosure obligations and reporting format.
  • OECD Employment DatabaseOrganisation for Economic Co-operation and Development2026-08-27
    Coverage
    Internationally comparable labour-force, employment, unemployment, working-time, wage-dispersion, and wage-gap series.
    Boundary
    Cross-country values must keep the published definition, population, frequency, currency or adjustment method, and reference period attached.

Read the result with its method and limits.

Use the relevant methodology before deciding which finding to act on.

Open the relevant workspace