The True Cost of Disengaged Employees (And How to Fix It)

What is the cost of disengaged employees? (Quick Answer)

Employee disengagement costs the global economy an estimated $10 trillion annually, which is roughly 9% of global GDP, according to Gallup.

The biggest hidden cost drivers include:

• Absenteeism and presenteeism: The lost productivity when disengaged workers take unplanned time off or come to work but stay mentally checked out.
• Knowledge drain: The expertise, institutional knowledge, and relationships that are lost when employees leave an organization.
• Replacement capital: The money and resources required to hire and train replacements when employees exit.

Mentorship programs are a proven way to increase employee engagement and retention: Engineering and construction firm CDM Smith saw 5% higher retention and 157 fewer staff losses resulting in $3.2 million in savings after launching a structured mentorship program.

Employee disengagement isn’t simply a morale problem. It’s a $10 trillion line item affecting 80% of the workforce, according to Gallup’s 2026 State of the Global Workplace. And most companies are only treating the symptom.

The numbers are staggering, but the fixes are rarely discussed at the right level. In this article, we’ll take a closer look at the costs of disengagement—both the obvious and hidden ones—and examine what structured mentorship does to reverse them.

Disengagement statistics: Quantifying the global detachment 

Reporting on employee engagement trends often includes estimates of the cost of disengaged employees in general terms:

• Worldwide: As we mentioned earlier, Gallup estimates low engagement worldwide led to $10 trillion in losses, accounting for roughly 9% of global GDP. 
• In the US: Gallup reports that disengagement is costing about $1.9 trillion in lost productivity per year.
• At the company level: McKinsey estimates that disengagement and attrition cost the median S&P company between $228 million–$355 million per year.  

As significant as these employee disengagement statistics seem, they may actually be conservative within a knowledge economy. While the Gallup methodology captures output loss, it likely underestimates innovation loss, customer experience degradation, and compounding team effects.  

HR executive Regina Dylerly discusses this problem on the SHRM blog, writing, “However, the cost of replacing a top performer isn’t just about recruitment and onboarding—it’s the potential loss of leadership, trust, and innovation. This is what makes the “Everyone is replaceable” myth so harmful. It ignores the ripple effects, the time it takes to rebuild the trust and knowledge that walked out the door.” 

It’s not always easy to put a price tag on these types of costs, but we’ll help you try to quantify them in the next section.  

The four-step formula to calculate your organization's disengagement cost

Want to get a better sense of what disengagement might be costing your organization specifically? Use this framework to translate Gallup's macro figures into a number that will get your CFO’s attention.  

Step 1: Quantify salary waste

According to Gallup's 2026 State of the Global Workplace report, US employees break down roughly as:

• 20% engaged (contributing at or above expectations)
• 64% not engaged (present but putting in minimal effort)
• 16% actively disengaged (actively undermining team performance)

Using the median full-time salary of $62,608 according to the BLS, we can make some estimates about lost productivity in terms of the amount spent on employee salaries.

The chart below shows the impact of disengagement on a 500-person company, estimated using Gallup's $1.9 trillion U.S. disengagement cost divided across the workforce, which comes out to ~$11,500 per disengaged worker. 

💰 Calculating the cost: If we combine the estimated annual cost from employees that are both actively disengaged and not engaged, we arrive at a combined estimated annual cost of $4.6 million.

Step 2: Factor in absenteeism and presenteeism

But we’re just getting started. There are two additional cost drivers that compound the total:

• Absenteeism: When employees call in sick or don’t show up to work, this can also impact your bottom line. According to the BLS, the national absence rate was 3.2% in 2025. Applied to a 500-person company, that represents roughly 4,160 lost employee-days per year—approximately $1 million in direct salary costs at the median daily rate of $241. And that's before overtime, temporary staffing, and operational disruption, which risk and claims administration provider Sedgwick estimates that absenteeism can cost companies $11,000 per employee per year.
• Presenteeism: Employees who show up but aren’t capable of working at their full capacity present a problem that can be both costlier and harder to see. According to BambooHR's research, 89% of workers said they’d worked through sickness and 41% had witnessed a coworker working when they should have taken a sick day. And, of course, these numbers don’t account for healthy but disengaged employees who show up but are mentally checked out. A Harvard Business Review study estimates presenteeism costs U.S. firms $150 billion annually—roughly $909 per worker per year. Applied to our 500-person company example, this adds up to around $455,000.  

💰 Calculating the cost: Combining the $1 million in direct salary costs due to absenteeism and $455,000 for the costs associated with presenteeism, we arrive at a combined total estimated cost of $1.45 million. 

Step 3: Add recruitment and onboarding costs for quiet quitters who leave

Of course, one of the risks of extended disengagement is that those “quiet quitters” will eventually leave, and their departure carries its own price tag.

SHRM estimates that replacing one employee costs 50–200% of their annual salary, or approximately 6–9 months' salary. For a mid-level role, that translates to $30,000–$120,000 per departure—and that’s before you account for the productivity gap while the seat is vacant, or the ramp-up time before a new hire reaches full output.

💰 Calculating the cost: In our 500-person example, if just 10% of the 320 employees who are not engaged leave in a year (about 32 people with an average replacement cost of $75,000), that's an additional $2.4 million on top of the productivity losses we’ve already calculated.

Step 4: Account for institutional knowledge loss

This is the cost that doesn’t easily lend itself to spreadsheets, but it’s still worth trying to take it into account.

Knowledge workers already spend 62% of their workday on “work about work,” which includes administrative tasks, status updates, and coordinating. And it’s easy to imagine how disengaged employees would be less likely to document, mentor, or otherwise share their knowledge with coworkers.

There’s other expertise and institutional knowledge employees gather during their time with your company. This can include relationships with external clients and people throughout the organization as well as an understanding of internal politics or processes that allows them to secure approval, keep projects moving, and generally get things done.

While there’s no easy way to put a number on this cost, you can calculate a rough institutional loss figure by multiplying an employee’s annual salary by the ramp-up period. For reference, BambooHR suggests onboarding should take between three months to a year.

For example, you could estimate that an employee earning $100,000 a year with a six-month ramp-up period would produce $50,000 in lost output. Remember that this calculation is separate from any recruiting costs you’ve accounted for earlier.

💰 Calculating the cost: Based on our 500-person company example, with 32 departures, the estimated total cost of knowledge loss and ramp-up time is approximately $1 million.

To recap, here are the total estimated costs:

• Step 1: Salary waste (active disengagement + unrealized output) = $4,600,000
• Step 2: Absenteeism + presenteeism = $1,455,000
• Step 3: Turnover + replacement = $2,400,000
• Step 4: Knowledge loss + ramp-up time = $1,000,000

👉 Grand total: $9,455,000

Now that you have a better idea of how to calculate this cost, you can try it out with your own company’s data and end up with a number that your CFO should be very interested to see.

💡 Wondering how you can avoid paying the steep price tag associated with employee disengagement? Download the Employee Engagement E-book for actionable guidance and real-world examples of effective employee engagement strategies you can put into practice at your company. 

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The hidden costs of disengaged employees no one talks about

Most conversations about employee disengagement focus on turnover, but that’s only one small part of the picture. Here are a few of the hidden costs of employee disengagement that might not be on your radar yet—though they should be.  

Knowledge drain when disengaged employees leave

We already know that disengaged employees are statistically more likely to leave. But it’s worth taking a closer look at how their departures do more than just create a vacancy; they break institutional "knowledge bridges" that took years to build.

We sometimes see this firsthand with our customers when we begin working together. For example, prior to engaging with Together, CDM Smith had a limited ability to match mentees and mentors—matching opportunities extended only as far as the manager’s network. You can imagine how in this setting, a mid-level manager’s departure wouldn’t just impact an employee’s day-to-day work, but also their ability to gain access to knowledge outside their department through mentorship.

Here’s how Jennifer Lee, an HR Expert Contributor, describes the ripple effect of institutional loss in HR Morning: “In an environment where employees regularly witness colleagues leaving and never returning, they may be less likely to form relationships at work and less likely to benefit from the accumulated wisdom of their more experienced peers. Inevitably, customers feel the impact, and the organization pays a price, whether in terms of lost revenue, weakened brand reputation, or fewer job applicants.” 

The manager tax—time spent managing low engagement

Managers are having an engagement crisis of their own. Gallup found that manager engagement dropped from 27% in 2024 to 22% in 2025. “Manager engagement affects team engagement, which affects productivity. Business performance—and ultimately GDP growth—is at risk if executive leaders do not address manager breakdown,” said Jim Harter, Gallup’s chief workplace scientist.

Part of the problem may be that managers are ill-equipped to help their teams overcome disengagement. Four out of ten managers admit that they have not yet achieved advanced or expert levels of proficiency when it comes to engaging their team or managing their performance. 

One way of framing this is the “manager tax:” Any time a manager spends reactively managing disengagement is time they’re not spending on developing, coaching, or delivering. When both managers and their teams are feeling unmotivated and just going through the motions, this can easily turn into a vicious cycle of disengagement.

Morale contagion and high-performer attrition risk

While managers tend to have a larger impact on employee morale than peers, anyone who’s disengaged can create a productivity shadow over their team. It can be hard to keep up motivation when you see your peers are only putting in minimal effort.

And once high performers start to leave, this can quickly escalate with even more attrition. Researchers from the London School of Economics describe what happens when high performers leave: “The departure of high performers, both voluntary and involuntary, causes a domino effect among the remaining high performers, resulting in increased quitting compared to other groups.”

Why standard engagement initiatives fail to move the needle

When employee engagement is low, the go-to solutions tend to be one-off and reactive, like pulse surveys and happy hours. Here’s why these typical approaches aren’t effective. 

• Surveys only measure the temperature of the problem. 

They don’t fix the underlying cause, which is feelings of isolation, lack of growth, and absence of meaningful connection. If you don’t take action based on what you learn from a survey, you’re creating an action gap that can erode employee trust even further. 

As senior communications manager Alyssa Towns writes, “The honest reality is that most annual engagement surveys were never designed to drive action. They were designed to demonstrate that leadership was listening. There is a significant difference between those two things, and employees have figured it out.” 

• Perks only provide a temporary boost. 

Employees might appreciate going to a baseball game or escape room for an evening, but these activities don’t actually foster deep connection to their coworkers or job. 

Employee loneliness is a serious issue with major repercussions. EY finds that more than 80% of global employees have felt lonely at work and nearly half say they’re likely to leave a job if they feel lonely at it.

• Typical programs take a one-size-fits-all approach to engagement. 

Not all employees want the same things or experience work in the same way, but typical employee engagement programs treat all employees as a monolithic, undifferentiated group.

McKinsey divides employees into six archetypes—thriving stars, reliable and committed, mildly disengaged, double-dippers, disruptors, and quitters—and suggests taking specific actions to minimize the disruptors and prevent burnout among the stars.

• HR initiatives tend to leave manager accountability out of the equation. 

Since employee engagement programs tend to come from HR, they often fail to account for the role managers play. This is a major oversight since so much of employee experience is shaped by managers. Employee insights platform Perceptyx finds that poor management quadruples turnover risk.

Don’t leave managers out of your employee engagement initiatives. Securing their buy-in and accountability can make or break your program’s success.

How mentorship recovers the cost of disengagement

The typical employee engagement tactics we covered above aren’t effective because they don’t address the underlying issues of isolation, lack of growth, or the absence of meaningful connection at work. But here’s how mentorship improves employee engagement and retention.

How to re-engage disengaged employees: Build a learning culture with mentorship

When companies invest in structured mentorship, they can systematically chip away at the causes of disengagement. As SHRM reports, “Forward-thinking organizations are seizing this moment to design tailored mentorship programs that not only meet the needs of their workforce but also bolster organizational resilience.” 

Mentorship does more than disrupt disengagement: It also enhances retention. LinkedIn finds that companies with strong learning cultures (which includes mentorship) have 57% higher retention than companies without this focus on growth.

What we’ve seen work over and over again with our customers is building a culture where engagement is a byproduct of growth instead of a one-off program. Let’s take a closer look at a few examples.

How Together's platform scales mentorship without HR overhead 

Scalable, data-driven mentorship that saves millions at CDM Smith

Engineering and construction firm CDM Smith wanted to promote employee growth through mentorship, but this was increasingly difficult with their geographically dispersed company. Their legacy mentorship program, Career Compass, was impactful but limited in participants and reach. By partnering with Together, CDM Smith created a scalable, data-driven mentorship program.

“By integrating Together's smart matching and analytics into our Career Compass program, we transformed mentorship from a manual, limited initiative into a scalable, data-driven experience that doubled participation, improved retention, and saved the firm $3.2 million,” said Jason Beck, Manager of Learning Systems at CDM Smith.

Key results at CDM Smith:

• 5% higher retention for program participants 
• 157 fewer staff losses
• 34% of mentees promoted vs. 13% of non-participants

Mentorship boosts connection and closes the skills gap at the Louisiana Office of Public Health

Stress and burnout are the top two reasons why employees leave careers in public healthcare, according to the Public Health Workforce Interests and Needs Survey (PH WINS). PH WINS also found that 23% of respondents were considering leaving their organization in the next year, and 29% said they’d be retiring in the next five years. An internal pulse survey at the Louisiana Office of Public Health also highlighted a need to connect with others, and a gap when it came to leadership skills training.

The Louisiana Office of Public Health identified mentorship as the cornerstone of their retention, employee engagement, and employee learning strategy. “The idea of a mentorship program originally came up… as a solution to improve retention. Once we realized that it could help us reach other organizational objectives, like closing skill gaps and boosting employee engagement, we knew that a mentorship program would be worth the investment,” said Jennifer Taylor, Deputy Director of Workforce at the Louisiana Department of Health.

‍Key results at the Louisiana Office of Public Health: 

• 100% of participants found the program valuable 
• Skill proficiency went from 83% of mentees having no knowledge of target skills to 100% reaching proficiency after the program

These programs—and others we’ve worked with our customers to create—tap into employees’ need for connection and meaning in their work, stopping disengagement before it takes root. 

And they do it without the need for significant HR overhead. For example, CDM Smith absorbed mentorship program growth without adding new headcount.

Another Together customer, Wellabe, took advantage of Together’s automations to reduce admin time from 20–30 hours a year to nearly zero. One Together customer, Kelly Pope at Compass Group, was able to run two concurrent programs with Together as her strategic support partner. Kelly explained the strain that many HR or L&D leaders feel when it comes to mentorship: "This isn't anyone's full-time job." 

Create the infrastructure to help your organization overcome disengagement

As we’ve been exploring here, disengagement is a deep-rooted problem with far-reaching consequences. This is why Band-Aid solutions like running engagement surveys or piling on new perks aren’t effective: You need to address the fundamental problems like lack of connection, meaning, and growth. 

Mentorship is one of the few HR interventions that can impact every aspect of the disengagement cost model: retention, productivity, knowledge transfer, manager effectiveness, and belonging. Investing in structured and sustainable mentorship programs means you’re building the infrastructure to overcome disengagement; not just filling in gaps temporarily.

See what fixing disengagement could mean for your team's bottom line. Book a demo.