Knowledge retention in the company: securing critical knowledge before key people leave

Wissenssicherung (knowledge retention) means the deliberate preservation of an organisation's business-critical knowledge, so that it stays in the company when people leave, retire or change roles. It is the preservation-focused part of the broader discipline of knowledge management: knowledge management describes the whole discipline, the handling of knowledge in general; knowledge retention asks the narrower question of how critical knowledge survives the departure of individual people. In service driven companies that knowledge rarely sits in systems, it sits in people's heads: client histories, the reasons behind decisions, pricing logic, the unwritten how.

Demography makes the topic urgent. According to the Institut der deutschen Wirtschaft (IW Köln, IW-Kurzbericht no. 78, October 2024), around 19.5 million baby boomers in Germany reach retirement age by 2036, while only about 12.5 million younger people follow behind them. A 2018 survey by Kyocera and Statista shows how tightly knowledge is bound to individuals: 38 percent of employees in Germany and Austria said much or even all knowledge would be lost if they left the company without a handover. You can roughly estimate what a single departure costs with our knowledge loss calculator; that the visible costs are only the smaller part is shown in What turnover really costs.

Knowledge retention does not start with a tool, it starts with prioritisation. Not all knowledge is equally critical. The loss is most expensive where a single person has become the sole holder of important information, at the so-called single points of failure. How seriously this risk is taken is shown by a 2019 survey of 521 SMEs by FH Dortmund: the death or illness of the owner or of key people is rated existence-destroying by 53 and 47 percent respectively, higher than any other business risk. Three questions help to sort this out:

1. Which person could be out tomorrow and bring a process to a standstill?
2. Which decisions and client relationships are documented nowhere in a traceable way?
3. Which knowledge is tied to an upcoming retirement or a planned role change?

Whatever gives the clearest answers to these questions gets secured first.

Once the priority is clear, the method decides. That a poorly prepared transition is expensive is shown by an Oxford Economics analysis (United Kingdom, 2014): it takes on average 28 weeks for a replacement to reach full productivity. The most durable way to keep that gap small captures knowledge where it arises anyway: in conversation, in the handover, in the client meeting. When those conversations are transcribed, structured by topic and made searchable with their sources, the knowledge stays without anyone having to document on top of their work. As soon as such a system can capture behaviour or performance, the works council must be involved in Germany and a works agreement is required in Austria; a one page summary of purpose, access and retention takes most concerns off the table early. How RECO does this in practice is under Knowledge transfer software for SMEs.

Knowledge retention is therefore less an IT topic than a leadership task. Knowing who your critical knowledge holders are and capturing their knowledge continuously, rather than scrambling only when a resignation lands, makes the company less dependent on individuals. That many act too late is shown by the DIHK Unternehmensnachfolge report 2025: 38 percent of departing owners are not well prepared for succession at the time of advice. The broader frame is in Knowledge management in the company; more on this in the topic hub Knowledge retention and turnover.