Imagine a company as a person. Its brain is an amalgamation of its employees’ knowledge. Its circulation system is the way in which that knowledge moves throughout the organization.  

So, what happens to the company corpus when employees leave—for example, when a merger triggers exits or changes a firm’s underlying DNA?  

It’s a problem many professional services firms we work with face, and it’s a costly one.  

Knowledge transfer is how an organization passes expertise from the people who hold it to the people who need it. It often breaks down during key transitions, like when experienced employees retire or when firms merge.  

Consider a firm that supplies engineers and technical specialists to sectors like utilities, construction, and aerospace and defense. As Boomers retire and skills gaps widen, that firm’s clients are at risk of major project delays, productivity losses, and higher labor spend. One client of ours modeled that knowledge transfer issues can cost upwards of $1 million for a single utility buildout.  

The same risk is present when firms combine. For example, law firms, whose value rests largely on the expertise of their people, are increasingly turning to mergers as they seek growth in a competitive market. A Bloomberg Law analysis shows that the money doesn’t always follow: two-thirds of the largest combinations between 2008-2019 saw profits per partner and revenue per lawyer grow more slowly than their competitors—often amid mass post-merger exits. As one expert told Bloomberg Law, “Law firm mergers are the Super Bowl of talent retention.” 

In both cases, people walk out the door with what they know—and the need for documentation is acute. But that documentation shouldn’t be AI-generated nonsense in some hidden corner of an intranet. It needs to be a dynamic, user-optimized resource that makes knowledge and organizational history both tangible and actionable. 

Knowledge loss in engineering, utilities and construction: what retiring experts take with them  

In some highly technical jobs—such as the trades or engineering-heavy sectors like oil and gas, utilities, and construction—expertise is essential but may not be written down. When the employees who hold that knowledge leave, the consequences can be costly and disruptive. 

We work with a range of legal professionals and consultants who serve clients in these areas. Ask them, “what’s keeping your clients up at night?” and this problem comes up again and again.  

Here’s some of what can be lost when a career engineer blows out the candle on a retirement party cupcake and rides into the Florida sunset:  

• Unwritten adjustments to standard formulas and rules of thumb refined through decades of field testing 

• Adjustments specific to a company’s assets, equipment quirks, or legacy infrastructure that aren’t in any manual 

• Understanding why a design decision was made 20 years ago, like knowing that an odd configuration on a device from a long-defunct manufacturer was a deliberate workaround and not a mistake  

• Anticipating which failure modes are likely given specific conditions, before any data analytics tool flags them 

• Knowing which suppliers cut corners, which field crews are reliable, which specs need extra scrutiny 

• Fixes applied to aging infrastructure that exist only in memory; remove the engineer, and the next team discovers the problem the hard way 

This is tacit knowledge: it doesn’t come from textbooks, lectures or diagrams. It passes from person to person, much of it living only in an engineer’s head. When they leave, it’s gone.  

The impact to the bottom line is real. Projects are delayed or suspended. Team cohesion and productivity take a hit. Skills trainings are hastily put together. Retired employees are hired back as consultants at more expensive rates.  

Why law firm mergers are a knowledge transfer problem 

Retirees taking decades of expertise with them isn’t the only way knowledge walks out the door. Mergers can hold the door wide open.  

This is a major issue in the legal industry, where law firms continue to chase growth through combinations aimed at growing scale, talent and geographic reach. Greentarget has been counseling law firms on mergers for over two decades, so we know from experience that getting bigger is the easy part. Integration is where combinations succeed or stall.  

Integration is usually described in operational terms—billing platforms, conflicts systems, HR structures. But the hardest thing to integrate isn’t a system. It’s the answer to the question “why do we do it this way?”, held by a few hundred people who each assume someone else has written it down. 

Here’s what can be lost when, like the Spice Girls song, “2 [firms] Become 1”: 

• The history behind a longtime client’s special treatment—such as a handshake accommodation made in 1998 that no one no remembers 

• The training and mentor relationships that passed down distinctive styles of brief-writing or deal-papering   

• The lessons from the last downturn: which clients stayed, what the firm cut or protected, and the loyalties that remain 

• The unwritten rules about how to push back, and to whom 

• The founding story and the values it established 

Capturing institutional knowledge before it’s lost: four best practices 

Whether the trigger is a retirement or a merger, the fix is the same: capture what people know before they go, in a form the next person will actually use.    

To do that, consider these best practices:  

Start before the exit interview – With engineers, create conditions where they can step off a production line to download and document knowledge in a focused, deliberate way. With lawyers, build knowledge capture into the integration plan, before key people decide whether to stay, or build extra days into offboarding to capture crucial knowledge. 

Record the why, not just the what – Document the reasoning behind why decisions were made. That context helps future employees determine what thinking still holds, and what needs to change.  

Write stories, not wikis  – Turn captured knowledge into engaging narratives with real stakes—not a repository people have to sift through—and optimize it for engagement and usability.  

Let AI search but humans explain – AI can transcribe interviews and help people search what’s captured. But it can’t replace the human act of explaining why something mattered, what was at stake, and how that knowledge should guide future decisions.  

How Greentarget helps firms capture institutional knowledge 

Every employee who leaves—whether through retirement or a merger—takes some part of the company with them.  

Capturing that knowledge takes a partner who can sit across the table from a 40-year engineer or a founding partner, earn their trust, draw out what they know and turn it into something the next generation will use. That is the work Greentarget has been doing alongside professional services firms for more than two decades. Here is what we bring: 

Industry fluency – We know how professional services firms make decisions, how client relationships get built and inherited, and why a merger announcement is the beginning of the work, not the end of it. That experience tells us which questions to ask, and which answers carry real business value. 

Anthropological curiosity – We approach a firm like ethnographers: listening for the rituals, the folklore, the unwritten rules and the reasons behind the reasons. Our journalist-trained interviewers know how to earn trust and draw out the implicit knowledge people rarely stop to put into words.  

Peerless writing ability – Our team of award-winning journalists and editors turns technical, tacit expertise into narratives that are clear, credible and memorable. Not a wiki. Not a transcript. A story with stakes that the next generation will actually read. 

Research and knowledge mapping – Before we document anything, we map it: who holds critical knowledge, where the gaps are and what’s most at risk. Stakeholder interviews and surveys tell us where to start. 

Learner-friendly formats – Oral history programs, podcast and audio series, digital magazines, video profiles, founding-story narratives and onboarding storytelling. Every asset is designed around the user experience, so knowledge is easy to find, retain and use. 

Change management and internal communications – Retirements, mergers, rebrands and leadership transitions are all moments when knowledge is most vulnerable. We fold knowledge capture into the broader communications plan so it happens on schedule, not as an afterthought. 

Human judgment, with AI where it helps – We use AI for what it does well, like transcription, tagging and search. The editorial judgment about what mattered, why and what it means for the next decision stays human. 

The firms that hold onto their purpose through change are the ones that remember why they do what they do. We can help you capture that knowledge before it walks out the door. 

Talk with our team about building a knowledge capture program for your firm.