The Obligation You Inherited at Completion: TUPE and the Employee Records You Must Have by Week One
Last Updated: 18 September 2026
In the UK, a business you buy comes with its employees on statutory terms you cannot renegotiate at the door, and the law sets a hard, dated data obligation before you even own them: the outgoing employer must hand over structured employee records, including disciplinary and grievance history, at least four weeks before the transfer completes. Almost every first-100-days playbook is American and skips this entirely. If your records baseline does not include what transferred and what was never written down, you are running a business whose employment liabilities you cannot list, on a clock that started before day one.
What Transfers at Completion, and Why Size Does Not Matter
Employment obligations in a UK business transfer automatically when the business changes owner. The rules are the Transfer of Undertakings (Protection of Employment) regulations, known as TUPE, and according to the government's own guidance on GOV.UK, the size of the business does not matter.[1] Employees transfer on their existing terms and conditions, with their holiday entitlement, and with their period of continuous employment intact, so a service record that started years before your ownership continues unbroken into it. Collective agreements made by the previous owner carry across too.
The transfer goes further than terms, and this is the part most new owners have never been told. According to the same GOV.UK guidance, the new employer takes over any failures of the previous employer to observe employees' rights.[1] That means a discrimination claim arising from something that happened before you completed can be brought against you. You did not cause it, you may not know about it, and you own it. ACAS puts the same point structurally: an employer cannot choose which employees transfer, and the protection covers everyone assigned to the part of the business changing hands, including businesses with just one employee.[2]
First, Check Whether TUPE Applies at All
Not every deal shape triggers the obligation, and the check takes minutes. According to ACAS, TUPE is not likely to apply to a transfer of shares or of equipment only.[2] If you bought the shares of the company, the employment contracts never moved anywhere: the same legal entity employs the same people before and after, so there is no transfer for TUPE to govern, and the liabilities were already inside the entity you bought. If instead you bought the business and assets, with the employees, premises, work in progress and goodwill changing hands to a new employer, TUPE applies and everything in this post follows.
Deal structure is decided long before day one, so a new owner might reasonably ask why this check belongs in the first 100 days at all. The answer is that the two deal shapes produce completely different evidence obligations, and only one of them announces itself. A share purchase hands you an entity whose records were somebody else's problem until the moment it became yours; an asset purchase hands you a four-week pre-completion information duty that has already been met, or not, by the time you take over. Knowing which shape your deal was tells you whether your week-one records audit is confirming a handover that was legally required to happen, or building from nothing because nothing was ever owed to you.
The Four-Week Data Deadline You May Not Have Seen
TUPE obliges the outgoing employer to give the incoming employer employee liability information, and the government's guidance is explicit about the clock: the employer must provide the information at least four weeks before the transfer.[1] This is not a courtesy summary of the team. It is a defined data set about named human beings, delivered to a deadline, and it is the clearest statutory expression of the site's own argument that data is the foundation: the obligation exists in law precisely because an owner cannot run, or defend, a workforce it cannot see.
What the Information Must Contain
The required content is specific. For each affected employee, the outgoing employer must normally provide the name, the age, and the main details of employment. Then comes the history: disciplinary action taken in the last two years, grievances raised in the last two years, legal action taken in the last two years, and potential legal action the employer believes employees might raise. Read that list as a buyer and notice what it is: a lookback window. Everything the previous owner never recorded, or resolved informally and forgot, sits outside the document and inside your business.
When the Records Were Never Kept
Here is the operating problem this duty exposes. The four-week handover is only as good as the records behind it, and a business whose employment information lives in one person's memory cannot produce it cleanly. If the outgoing owner's answer to "where are the disciplinary records?" is a filing drawer, or a former office manager's recollection, you have learned something more important than any single document: how this business records anything at all. A gap in the liability information is not only a compliance question for the seller. It is your first reliable evidence of the documentation culture you have just inherited, and it should calibrate how much you trust every other unwritten process you find in the first 100 days.
Inform and Consult Before Completion, Not After
The second pre-completion duty is informational in the other direction. Before the transfer, employers must tell the trade union or employee representatives that the transfer is happening, when and why, how it will affect employees, whether there will be a reorganisation, and how many agency workers are used and what work they do. According to GOV.UK, employers can be penalised if they do not do this,[1] so the duty sits with the party that fails to discharge it, not quietly with the deal.
Where there are no representatives in place, the rules allow direct consultation with employees in smaller cases: where there are fewer than 10 employees, and, for transfers completing on or after 1 July 2024, also where the employer has fewer than 50 employees or is transferring fewer than 10. Below those thresholds a sole owner-manager can speak to their people directly; above them, representatives must be elected. A new owner should know which regime applied to their deal, because the consultation record tells you something diligence rarely captures: what employees were told about the change, and when. Walking into week one knowing whether the team heard about your ownership from a proper consultation or from rumour changes entirely how you run your first conversations with them.
The Week-One Records Audit
The first-100-days answer is a records audit, done in week one, that checks what you actually hold against what the law says should have transferred. List each employee. Against each name, record whether you hold the main employment details, the holiday entitlement and the continuity start date, and whether you hold anything at all for the two-year lookback on disciplinary action, grievances and legal claims. Where the liability information was never provided, or was provided thin, mark the gap, date it, and name an owner for closing it. The finished audit is your employment baseline: the document that says, on a dated page, what you know about the obligations you inherited and what is still missing.
How the Audit Gets Done
In our discovery workshops, the fastest way to expose how much of a business runs on undocumented knowledge is to stop accepting "someone handles that" as an answer and ask who, and where it is written down. The people questions behave the same way. The audit should not be delegated to whoever happens to have the HR folder: sit with the longest-serving employee or the office manager and walk the workforce one name at a time, exactly as you would walk system access, because the record of who started when, on what terms, and with what history is usually held in the same head that holds everything else. People involved early in building the picture tend to become its champions afterwards, and the discussion itself surfaces pain points no document ever recorded. What you are producing is not paperwork for its own sake. It is the first honest inventory of the human obligations attached to the business you bought, and like every other baseline you build in the first 100 days, its value is that you can finally see the gap between what should exist and what does.
