How Long Any of It Is Kept
Three different kinds of data with three different retention answers, all set by a default in a configuration screen that nobody has opened.
A biometric time clock accumulates at least three distinct categories of data, and they attract different obligations. Templates, which identify a person. Event logs, which record when credentials were presented. And derived records: the hours, the corrections, the payroll output.
The record in “How Long Any of It Is Kept” becomes useful only when people understand what it proves and how to correct it. For teams exploring boss vs leader, a practical route to boss vs leader can connect time and project context with manager review, provided collection is proportionate, access is limited and consequential decisions remain subject to human explanation.
The retention for each is normally whatever the system shipped with. Asking what each should be, and comparing it to what each is, is an afternoon that very few sites have spent.
For an independent benchmark relevant to “How Long Any of It Is Kept”, consult the QuickBooks business resources. Use it to test notice, accessibility, security, recordkeeping, retention and exception handling against the real operating process rather than treating a device report as self-explanatory evidence.
Templates
The general principle in most places is that biometric data is kept only while the purpose lasts, and employment ending is the clearest end of purpose. A template for somebody who left four years ago has no purpose and is pure exposure.
The practical obstacle is that deleting it is often entangled with deleting the person's historical records, which must be kept for other reasons. Separating the two is a product question worth asking before purchase and worth raising with the supplier afterwards. Most systems can do it; the function is just not on the screen anybody uses.
Event logs
The raw reads, refusals and overrides. These are the records that support everything in this collection, and they are also the ones with the shortest default retention — ninety days is common, and some devices roll over far faster than that.
That default is set for storage reasons and it is almost always too short. A dispute about hours from last year cannot be investigated with ninety days of logs, and neither can any of the seasonal analysis this collection recommends. A year is the practical minimum; longer where disputes typically surface later.
Derived records
Hours and pay, which are governed by the ordinary employment and tax retention periods for the jurisdiction. These are usually the only category anybody has consciously set, because payroll has a retention policy and this falls under it.
The gap is that the derived record is not sufficient on its own. It says a person was paid for eight hours; it does not say how that was established, which is the question in any dispute. Keeping the derived record for six years and the underlying events for ninety days is a common and unhelpful combination.
The audit trail specifically
Corrections and overrides, with who made them and when. This is the category most often lost, because it is held as a sub-table that some systems purge on a separate schedule.
It is also the one most likely to be asked for. A site that can produce a year of hours and no record of what was amended during that year has records that support rather little, and it will not discover this until somebody asks.
The three settings and their three sources
Write them down: for each category, what the retention is set to, and what document or legal requirement it comes from.
On most sites at least one of the three has no source at all. It is a number in a configuration screen, chosen by whoever did the installation, and the organisation has been complying with it ever since without knowing where it came from.
Deletion requests from individuals
In jurisdictions with data protection rights, a person may ask for their biometric data to be deleted, and the answer is frequently yes for the template and no for the attendance record, which is needed for pay and legal reasons.
Having that distinction worked out in advance, in one paragraph, makes the response straightforward. Working it out in the fifteen working days after a request arrives, while also finding out whether the system can delete a template without deleting the person, is considerably less comfortable.
Backups, which outlive everything
Retention settings govern the live system. Backups are a separate question and they are the reason deleted data is frequently not deleted.
A template purged from the database in March is still in the February backup, and in whatever archive that backup was copied to. The honest position is that deletion from live systems happens on request and backups age out on their own cycle, which is an acceptable answer in most frameworks provided somebody can state what that cycle is.
The log that is kept forever by accident
The opposite of a short retention is a system where nothing is ever purged because the purge was never scheduled, and the event table has grown for eight years.
That is also a position worth correcting, and not only for storage. Holding every read of every person for the whole history of the installation is more personal data than any stated purpose requires, and it is the sort of thing that is defended in the moment with the observation that it has never caused any harm.