For a long time, being a skills-based organization has been defined as knowing which skills your current workforce has. The thinking is that once you know who can do what, and how well, you can prepare your workforce for the future by developing, moving, or hiring people to close the gaps you find.
That premise holds up to a point. A trusted view of your workforce's skills gives you the foundation for several important goals. You can put people in the roles where their skills are most useful, keep your best performers by giving them room to grow, and build a resilient workforce that can keep the work going when people leave or the business changes. Deloitte backs this up, finding that organizations that make the shift are 107% more likely to place talent effectively, 98% more likely to retain high performers, and 57% more likely to anticipate change and respond to it effectively.
A clear view of your skills directly supports the first two goals. To plan for resilience, organizations also need to understand how much capability they can continue to rely on as people leave or move into other roles. Knowing which skills your people have today provides an essential baseline. It does not, by itself, show whether you'll still have enough of those skills to ensure after workforce change.
For instance, imagine a claims team of ten people who can all investigate claims. Two of them are experienced enough to handle large or disputed claims, while the other eight handle routine ones, and the team needs both experienced investigators to keep up with its complex cases. When one of those two leaves, your skills inventory will still show nine people who can investigate claims.
The inventory is doing its job by showing the skills present across the team. The next question is whether those skills provide enough coverage for the work that depends on advanced proficiency. The team now has one person who can handle complex claims, so it has a coverage risk even though the inventory continues to show a strong overall count. Until someone else is trained to take on those cases, which could take months, complex claims will pile up behind one person.
This is why a skills inventory is such an important foundation for a resilient workforce. It gives you a governed view of current capability. You can then build on that view with insight into which skills could run short as people leave or change roles, and get that insight early enough to train, move, or hire people before the work suffers.
We've established that a skills inventory gives you a strong current view of your workforce. It can show a skill as present even after the people who carried most of its depth have left or moved. There are three further reasons why having the right skills today, and knowing exactly which ones you have, doesn't tell you how long you'll be able to rely on them. Each one makes a future shortage harder to see from current-state skills data alone.
A skills inventory provides a valuable view of your workforce as it was when the data was last enriched. Your workforce keeps changing between updates. In August 2026 alone, 3.1 million people in the US quit their jobs, which is 1.9% of everyone employed, or roughly one worker in fifty, according to the Bureau of Labor Statistics. That figure counts people who chose to leave, so it doesn't include retirements, layoffs, or people who moved to a different role inside the same company.
Internal moves matter here too, because they take expertise away from a team without the person leaving the company. If one of the experienced claims investigators were promoted into a management role that doesn't involve investigating claims, they would still have the skill and your inventory would still list it. The claims team would no longer have their help with complex cases.
So you can expect some of the skills in your inventory to change hands every month. The inventory gives you the current picture. The question it cannot answer on its own is which skills those changes will affect, because it records who has each skill today, not who is likely to leave or move.
A skills inventory records which skills each person has and how good they are at them. That is a critical part of understanding workforce capability. There is another layer of expertise that comes from years in the same organization, such as how your systems and processes work, which clients need special handling, or why past decisions were made. A study reported by HR Dive of 1,001 US employees found that 42% of institutional knowledge is unique to the individual employee, which means that when that person leaves, their colleagues have to work out that part of the job again.
This is also why hiring someone with the same skills on paper doesn't fully replace the person who left. A study published in the American Economic Journal: Applied Economics found that nurses' experience on their specific unit improved patient outcomes, and that when experienced nurses left, or new nurses joined, productivity fell by more than the change in the nurses' skills and experience could explain. In the claims example, a newly hired investigator might be just as skilled as the one who left, and still wouldn't know how your company handles its largest or most disputed claims.
When someone resigns, they're usually gone once their notice period ends, often within weeks. Replacing what they did takes much longer. You first have to recruit someone, and then that person needs time to get up to speed. Research reported by HRreview for the insurer Unum found that new employees in the UK take an average of 28 weeks to reach their optimum productivity, rising to 32 weeks for people who join from a different sector. Training an existing employee can be quicker, and they still need to practice on real work under supervision before they can handle it alone.
Together, these reasons show why a current skills view works best alongside an early-warning view. The time to act is before people leave, while your experts are still there to train others and pass on what they know. That means knowing in advance which skills could run short.
Knowing in advance which skills could run short is what Fuel50's Strategic Insights Skill Attrition Risk analyses are built for. The analyses build on the skills data and role context established in Fuel50, including who has each skill, how good they are at it, and how much of it each role needs. They then add the likelihood that people will leave or move into roles that don't use those skills. The result shows which skills you're already short of, which ones could run short over the next three months, and which ones you could lose completely, so you know where to act while there's still time.
Because the analyses use the skills, proficiency, and role data configured in Fuel50, they sit naturally alongside Fuel50's Skills Inventory and Skills Architecture. The analyses are available through Fuel50 Insights for customers on the Strategic Insights package.
Your skills inventory establishes which skills are present and at what proficiency. Strategic Insights builds on that foundation by comparing the total expertise your people have with the level required by the roles that depend on it. That comparison reveals a skill that's present in your inventory and still needs deeper coverage for the work, which Fuel50 calls a “coverage gap.”
For each skill, the analyses also show how close you are to a gap. The coverage buffer tells you how much more or less expertise you have than your roles need, so a negative buffer means you're already short and a small positive buffer means you have little room to lose anyone. Next to it, the analyses show how many people have the skill today and the smallest number of departures that would leave you short.
Reading those numbers together would have exposed the claims team's problem early. Ten investigators would have looked like a healthy number of holders, and the coverage view would have shown that a single departure was enough to leave the team short because its ability to handle complex claims depended on just two people.
Because people leave and change roles every month, knowing how close each skill is to a gap becomes more useful when you also know how likely it is to get there. The analyses estimate this from how likely each person with a skill is to leave the organization or move into a role that no longer uses it, and from how strong their skill is. They turn that into two percentages for each skill: the chance that it falls into a coverage gap over the next three months, and the chance that you lose it completely.
Your inventory shows who has each skill today. Strategic Insights builds on that current-state view with a ranked list of the skills most likely to run short, alongside how many people have each skill and how many would need to leave to create a gap. That ranking shows you which skills need a plan first.
Some skills are held by so few people that losing one or two of them would leave nobody with the skill at the level the work needs. The analyses rank these skills by their risk of total loss and show how many people would have to leave before the skill is gone, which points you to the experts whose knowledge needs to be shared first.
This matters because, as we saw earlier, much of what experienced people know isn't recorded anywhere, and replacing them through hiring can take more than half a year. The analyses can't tell you what undocumented knowledge an expert holds. They do tell you which skills depend on so few people that you should start cross-training, knowledge transfer, or succession planning now. The three-month warning suits those responses well, because all of them need the expert to still be around to teach others.
You can run all of these views for the whole organization, a business unit, or a function, depending on how Fuel50 is set up for you. That matters because a skill can look fine across the company and be short in the one function that needs it most. The results stay at the skill level, so they won't tell you which employees are going to leave, and they're estimates to guide your planning rather than certainties. They're also as accurate as the workforce, skills, and role data behind them, so review them alongside what you know about the business. Access is through the Strategic Insights package, subject to configuration and data readiness.
Seeing which skills could run short is an important step in building a resilient, skills-based workforce. It depends on the steps before it, because the analyses are built on the skills and role data underneath them. Each step answers one question about your workforce and opens the next one, so where you start depends on which questions you can already answer.
Before deciding what to do next, work out where you stand by answering four questions:
Do you have one trusted record of which skills your people have and how proficient they are, or is that information spread across spreadsheets, your HRIS, and old frameworks?
Have you defined which skills each role needs, and at what level?
Can you see where you're short today, and do you have a way to develop or move people to close those gaps?
Can you see which skills could run short over the next three months, and how many departures it would take?
The first question you answer no to is where you start. If you want a more structured answer, Fuel50's free Skills Maturity Assessment takes about two minutes and places your organization on a five-stage scale, from ad hoc skills practices to a future-ready skills ecosystem, along with the strengths, gaps, and priorities for your stage.
If you answered no to the first question, start here, because every later step depends on knowing who has which skills. In most organizations, that information is scattered across spreadsheets, HRIS records, learning systems, and frameworks that don't match each other. Fuel50's Skills Inventory brings it into one place, removes duplicates, and validates it against Fuel50's skills ontology and proficiency models, so you end up with a single record of which skills your people have and how proficient they are.
That record gives you a clear, current view of workforce capability. To understand whether you have enough of those skills for the work, pair it with the role requirements defined in your skills architecture. Strategic Insights then extends that connected view into future skill coverage and attrition risk.
To know whether you have enough of a skill, you need to know how much of it each role requires, which is what a skills architecture defines. Fuel50's Skills Architecture sets the skills and proficiency levels each role needs, drawing on market data, your existing job architecture, and input from Fuel50's I/O psychologists. Its Role Editor then lets the people who know the work best keep those role profiles accurate as the work changes.
Once your roles state what they need and your inventory shows what your people have, you can compare the two and see where you're short today. That comparison gives you the current coverage view. Strategic Insights adds the next planning question: how much a skill depends on a few people, and how likely that coverage is to change.
With today's gaps in view, you can start closing them with the people you already have. Fuel50's Talent Marketplace does this through four modules. Development builds personalized growth plans that map each person's skills to the roles they're aiming for. Gigs matches people to short-term projects where they practice new skills on real work. Mobility surfaces internal candidates who already have the skills a role needs, and Succession builds skills-based pipelines for critical roles.
These tools become more targeted when you point them at the gaps you can see today. They help you catch up. To get ahead of gaps that haven't opened yet, you need to know where those gaps are likely to appear. Strategic Insights provides that forward-looking view.
This is the step that extends everything before it into an early warning. The Skill Attrition Risk analyses in Fuel50 Strategic Insights use the skills, proficiency, and role data you built in the earlier steps and add the likelihood that people will leave or move into roles that don't use their skills. From that, they show which skills could run short or be lost over the next three months, and how many departures it would take. For the claims team, this is the step that would have shown that complex claims depended on two people while both of them were still there.
What the analyses flag then tells you where to point the tools from the previous step. A skill that is one departure away from a gap becomes a reason to set up a mentoring relationship, a gig, or a succession plan now, while the expert is still around to pass on what they know. Leaders still decide which response fits each skill. They decide it before the gap appears rather than after.
See which of your skills could run short, and where to start building depth before they do.