Methodology

How the Score Works

The EmployerLens Employer Health Score ranges from 0 to 100. It is calculated deterministically from publicly available data — given the same input data, the same score will always result. No randomness, no AI in the scoring loop.

The score is composed of five weighted dimensions, each scored 0-100 internally and then combined using the following weights:

Dimension Weights

Score Ranges

Red Flag Detection

Red flags are binary signals that trigger independently of the overall score. They highlight specific concerns:

• Active insolvency — Any active insolvency case
• Late filings — Overdue accounts or confirmation statement
• Mass director exodus — 3+ director resignations in last 12 months
• CFO/FD resignation — Finance director resigned in last 6 months
• New charge + director change — Within 3 months of each other
• Accounts overdue — Accounts past their filing deadline
• Company in distress — Status is liquidation, administration, or voluntary arrangement
• HSE prosecution — Health and Safety Executive prosecution on record
• CQC Inadequate — Care Quality Commission rated provider as Inadequate
• FCA disciplinary action — Financial Conduct Authority has taken disciplinary action
• Multiple ET decisions — 3+ Employment Tribunal decisions involving the employer
• Missing Modern Slavery statement — Company above £36m turnover threshold with no statement on record

Positive Signal Detection

Positive signals highlight strengths identified from the data:

• No late filings — Clean filing history with no penalties
• Stable leadership — All directors 3+ years, no recent resignations
• Living Wage accredited — Pays the real Living Wage
• GPG improving — Gender pay gap narrowed year-on-year
• Long-established — Active company incorporated 20+ years ago
• Full accounts filed — Voluntarily files full accounts
• B Corp certified — Meets verified social and environmental standards
• Disability Confident Leader — Highest level (Level 3) of the government scheme
• CQC Outstanding — Rated Outstanding by the Care Quality Commission
• Great Place to Work — Certified through employee surveys
• Multiple accreditations — Holds 3+ employer accreditations

Enrichment & Enforcement Scoring

When enrichment data is available, the overall score is adjusted:

• Accreditation bonuses — Applied to the Culture dimension. B Corp (+15), DC Leader (+10), GPTW (+10), IiP (+8), Stonewall (+5), Modern Slavery compliance (+3), Armed Forces Covenant (+3).
• Enforcement penalties — Applied to the overall score. Critical severity (-20), Serious (-10), Moderate (-5), Minor (-3). Maximum total penalty is capped at -30.
• CQC ratings — Inadequate (-15), Requires improvement (-5), Outstanding (+5).
• FCA disciplinary history — Applies a -10 penalty to the overall score.

Data Sources

• Companies House REST API — Company profiles, officers, filing history, charges, insolvency proceedings, PSC register. Updated in real-time as filings are processed.
• GOV.UK Gender Pay Gap Service — Annual reports from employers with 250+ employees.
• Living Wage Foundation — Accredited employers who pay the real Living Wage.
• Convert-IXBRL — Structured financial data parsed from iXBRL-format filed accounts.
• GOV.UK Disability Confident — Employer list with scheme level (Committed, Employer, Leader).
• B Corp Directory — Certified B Corporations with verified impact scores.
• Modern Slavery Statement Registry — GOV.UK registry of published Modern Slavery Act statements.
• Health and Safety Executive — Public prosecution convictions and enforcement notices.
• Employment Tribunal Decisions — GOV.UK published tribunal decisions.
• Environment Agency — Enforcement actions and pollution incidents.
• FCA Register (financial sector) — Authorisation status and disciplinary history for firms regulated by the Financial Conduct Authority.
• Care Quality Commission (health/social care) — Provider ratings and inspection reports.
• Charity Commission — Registration details, income, and filing status for registered charities.

Limitations

• Micro-entity and dormant company accounts contain very limited financial data. Scores for these companies will rely more heavily on non-financial signals.
• Companies House data is only as current as the most recently filed documents. Accounts may be up to 9 months behind the actual financial position.
• The gender pay gap threshold of 250+ employees means smaller employers are not assessed on this dimension.
• The score is not a credit rating, investment recommendation, or legal assessment. It is a transparency tool designed to surface publicly available information in an accessible format.