FTC fires warning shot at law firms that pursued DEI certification

Summary

The Federal Trade Commission, led by Chairman Andrew Ferguson, sent warning letters to 42 law firms about potential antitrust risk linked to their participation in Diversity Lab’s Mansfield Certification programme. The FTC flagged “knowledge-sharing” calls and the sharing of DEI metrics as activities that could amount to unlawful coordination and diminish labour competition.

Ferguson said the letters were meant to alert firms to potential liability, not to allege illegal conduct. The move follows his 2025 directive identifying collusion on DEI metrics as a risky practice. Diversity Lab maintains Mansfield is an inclusive sourcing process, not a quota-driven policy. The action also fits a wider enforcement trend: the DOJ and EEOC have recently signalled increased scrutiny of corporate DEI efforts under the current administration.

Key Points

The FTC sent warning letters to 42 law firms about participation in Diversity Lab’s Mansfield Certification programme.
The agency cautioned that sharing competitively sensitive information — including DEI metrics or candidate-slating agreements — can violate antitrust laws and harm labour competition.
Ferguson emphasised the letters are alerts about potential liability, not findings of illegal behaviour.
Diversity Lab says Mansfield is an “inclusive sourcing process” and does not impose quotas or exclude candidates on the basis of demographics.
The action is part of a broader federal push (DOJ, EEOC) to scrutinise certain DEI programmes under the Trump administration.

Why should I read this?

Heads up — if you work in HR, in-house legal or at a law firm, this is one to note. The FTC is signalling it will patrol how firms share DEI data and run candidate-sourcing conversations. That could change how you run diversity initiatives, who you talk to about metrics, and what you document. Short version: it might be time to check your process and paper trail.

Context and Relevance

This is significant for employers and law firms because it reframes some DEI practices as potential competition concerns rather than solely civil-rights or policy issues. The FTC’s focus is on preserving open competition in labour markets — it warns that coordinated behaviour around candidate slates, quotas or shared metrics could exclude applicants and reduce fairness in hiring.

Organisations that use external certification programmes, consultancies or industry calls to benchmark DEI should reassess how they exchange information and whether any collaborative activities could be interpreted as coordination on hiring decisions. The story is part of a broader enforcement trend from multiple federal agencies scrutinising DEI programmes and their implementation.

Author’s take

Punchy and clear: this isn’t just regulatory theatre. For many firms, the practical takeaway is to tighten governance — limit the sharing of competitively sensitive hiring data, document decision criteria, and get legal sign-off on any collaborative DEI work. Read the detail if you run or advise on recruitment, promotions, supplier or panel-selection processes.