SOC 2 Is Not Your Shield: HR-Vendor Due Diligence Over Employee Data

Belief: if your HR or benefits-plan vendor has a SOC 2 report, your employee data is covered.

A SOC 2 report is a point-in-time snapshot of a vendor’s controls, scoped and methodology-dependent. It is not a guarantee, and it does not transfer the employer’s own duties — including ERISA fiduciary duties over plan data, FEHA confidentiality obligations around medical and accommodation information, and CCPA and CPRA controller obligations over employee personal information. The vendor’s report tells you something useful; it does not finish your due diligence.

The break point is the procurement shortcut. A small-business owner asks a payroll vendor or a benefits administrator whether they are SOC 2 compliant, gets a yes, and treats the conversation as resolved. The actual report is never requested, the scope is never reviewed, the testing period is never compared against the current operations, and the audit firm’s independence is never assessed. When something goes wrong — a breach, a missing termination report, a data-handling complaint — the employer is left holding obligations it never realized it kept.

The proof pressure point is what the employer can show about its own due diligence. The recent compliance literature has flagged a series of questions that should be in every vendor file: what is actually in scope; when did the testing occur; what has changed since the report was issued; how independent was the audit; do the findings make sense; and is there ongoing monitoring or just a static document. ERISA plan fiduciaries face additional duty-of-prudence questions whenever the vendor handles plan data.

The corrective frame is to treat the SOC 2 report as the start of due diligence, not the end. For a small California employer, that does not require a full vendor risk program. It requires reading the report, asking the questions, documenting the answers, and revisiting the file annually. The employer cannot outsource a duty it owes itself.

This post shares general information based on common patterns I see in California workplaces. It is not legal advice, does not create an attorney-client relationship, and outcomes depend on specific facts — no lawyer can guarantee a result. Past results do not guarantee or predict future outcomes. AI may have been used to create this post. All content reviewed by a CA attorney before publication. This post may be attorney advertising.

Michael Trust Law, APC, 703 Pier Avenue, Ste. B367, Hermosa Beach, CA 90254: michaeltrustlaw.com