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Screening & Vetting19 March 2026 · 3 min read · Updated 27 September 2026

Verifying employment history: what actually counts as done

An applicant lists their employment history on a form. That list is a claim, not a fact, and the verification stage of screening is the work of turning it into something evidenced — contacting the employers themselves, not simply accepting the applicant's own account of what they did and for how long.

What verification is trying to establish

It is not only confirming that an employer existed. It is confirming dates, the role held, and — where the employer is willing to comment — conduct. The most recent period of employment or activity is usually the one that needs the most direct confirmation, because it is the most recent evidence of how the applicant actually behaves at work.

Where verification gets thin

  • An employer no longer exists, or cannot be traced through the details supplied
  • A former employer will confirm dates but declines to comment on conduct
  • Self-employment, where there is no separate employer to contact at all
  • Periods of study, caring responsibilities or travel, which are not employment but still need to be accounted for
  • An applicant who has worked overseas, where verification routes differ from a UK employer

None of these mean the applicant is hiding something. They mean the standard verification route does not apply cleanly, and the file needs to show what was tried and what was found, rather than a blank space where a reference should be.

Recording the attempt, not just the outcome

An assessor reviewing a file is not only looking for a confirmed history. They are looking for evidence that verification was actually attempted where it could not be completed — the date an employer was contacted, the method used, and what response, if any, came back. That written trail is what separates a gap that was investigated from one that was simply left.

Where the history genuinely cannot be verified — an unexplained period with no employer, no activity and no explanation — that is a different and more serious finding than a period that was investigated and reasonably explained. See explaining gaps in employment history for how that distinction is normally handled.

What makes verification genuine

The difference between verification and collection is whether anything was done to establish that the source is what it appears to be. A reference on company letterhead from an address supplied by the candidate, sent to an email address the candidate provided, verifies very little — and it is the most common form a reference takes.

Independent contact details, a check that the employer exists, and a record of how the referee's position was confirmed are what turn a document into evidence. None of it is elaborate and it is the part most often skipped when a file is being completed under time pressure.

Common mistakes

  • Contacting referees only through details supplied by the candidate
  • No record of how the referee's authenticity was confirmed
  • Accepting a reference without checking the employer exists
  • Verbal confirmation with no contemporaneous note
  • Different standards between branches or recruiters
  • Filing the reference without recording who obtained it and when

What separates verification from collection

Independence of the source. A reference obtained through contact details the candidate supplied, confirming employment the candidate described, has not independently established anything — and it is the most common form a reference takes.

Contractors who do this properly contact employers through independently obtained details, confirm the organisation exists, record how the referee's position was established, and note all of it at the time. It is more work and it is the difference between a file that survives scrutiny and one that merely looks complete.

One practical test: check how you got the contact details

Take a recent reference and establish where the referee's contact details came from. If the answer is the candidate, the reference has independently verified very little.

It is the commonest form a reference takes because it is the easiest to obtain, and it looks identical in the file to one that was properly verified. Independent contact details, confirmation the employer exists, and a note of how the referee's position was established are what turn a document into evidence.

  • Obtain contact details independently of the candidate
  • Confirm the employer exists before accepting a reference
  • Record how the referee's position was established
  • Note verbal confirmations contemporaneously
  • Apply the same standard across recruiters and branches
Key takeaways
  • Verification means contacting employers directly, not accepting the applicant's own account
  • The most recent period of employment usually needs the closest confirmation
  • Self-employment, study and overseas work all need a different verification route, not a blank entry
  • Record what was attempted, not only what was confirmed
  • An unverifiable gap and an investigated-and-explained gap are different findings, not the same one

About this article

The SecureOptix team

Written by people who work daily with security contractors on SIA licensing, screening and the records that hold up under an inspection.

Published
19 March 2026
Last revised
27 September 2026

How this is researched, dated and corrected is set out in our editorial standards. If something here is wrong or out of date, email hello@secureoptix.co.uk — corrections to a regulated detail are made as soon as we can confirm them, and the revision date above moves when they are.