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Data Retention

Under Settings > Data Retention you set how long deleted records — employees, addresses, groups, shifts, working hours, absences, breaks, and more — remain in the system before they are permanently removed.

How it works​

Two-stage deletion: When you delete a record in Klacks, it is initially only given a soft-delete flag (marked as deleted, but still physically present). Only after the retention period configured here has elapsed does a daily background service remove the rows marked as deleted physically and irrevocably from the database — across all affected tables, not just for a single area.

Setting the retention period: The input field accepts values between 30 and 36,500 days (roughly 1 month to 100 years); alongside it, Klacks also shows the period in years/months. The default value is 3,650 days (10 years).

Good to know​

  • Shortening the period also affects existing records that were already deleted long ago: anything older than the new period is removed on the next run of the background service — check whether this is intended before shortening it.
  • Physical deletion is final — there is no restoring it afterward, not even by support.
  • This setting is the technical foundation for the deletion periods described in the privacy policy; it applies globally to all soft-delete-capable data types and is not configurable per module.

Try it yourself: Klacks Playground — login admin@test.com / P@ssw0rt1, data resets daily.