It’s not just skilled workers we’re short of.

Discussions about the skilled labor shortage usually center on the obvious: too many retirements and too few applicants. But there’s another problem lurking underneath. In many parts of the U.S., there are too few qualified instructors. 

Companies can decide they want more apprentices, and schools can enroll more students. More public money can be devoted to workforce programs. But that doesn’t solve the shortage if there aren’t enough qualified people to teach the next generation. 

The U.S. Department of Labor (DOL), for example, describes its Registered Apprenticeship program as ”a proven model of workforce development that pairs on-the-job learning under an experienced mentor with related technical instruction.” Problem is, the training capacity of the system depends on a readily available supply of capable mentors and trainers.

The shortage behind the shortage.

Historically, attracting young people to the trades has been a marketing problem. That’s changing as 1) AI displaces thousands of white-collar workers, and 2) students discover that the trades offer satisfying work at good salaries.

Apprentices, however, don't become productive technicians through job postings or sign-on bonuses. They need someone qualified to teach them how to diagnose, document, communicate, work safely, and make decisions under pressure. A person who can explain the real rhythm of the work and correct mistakes early enough that they become lessons instead of habits.

That’s why the mentor gap is so problematic. A company may have enough work to support more entry-level people, but without qualified instructors, it won’t be able to absorb them well. 

That constraint becomes even more serious in an already tight labor market. A recent survey found that 92% of construction firms reported difficulty filling open positions. When skilled labor is hard to find, the experienced people already in the field become even more stretched. They need to perform, solve the more difficult jobs, and keep customers happy. In that case, training often gets squeezed in around the edges—if it’s offered at all. 

Good mentors are harder to find than companies admit.

Many businesses assume that every strong technician can become a strong mentor. That's not always the case.

Being highly capable in the field isn’t the same as knowing how to teach. A great mentor has to explain well, stay patient under pressure, give usable feedback, and know when an apprentice is lost versus simply slow—all while carrying their own workload.

That combination of skill and patience isn’t easy to find.

The Urban Institute has published a guide for mentoring. It provides tips for those who want to become mentors, offers advice on common topics, and contains a list of frequently asked questions. The need for this guide is a useful reminder: mentoring is not an automatic byproduct of experience, but a skill that needs its own support.

The hidden cost for businesses.

The most obvious cost of the mentor gap is slower growth. A business may have more demand than it can serve, but without enough people capable of training apprentices or newer hires, adding staff becomes risky. The company either stays smaller than it wants to be, or grows in a way that creates quality problems.

The second cost is inconsistency. Too often, training depends on whichever senior person has a little time, which makes for uneven development. The senior tech might explain a certain repair technique, but may not have time to explain closeout procedures. One tech might provide patient instruction, while another is too quick to criticize, or embraces a “sink-or-swim” mentality. 

The third cost is burnout. The best technicians often become the default trainers whether they asked for that role or not. They carry the hardest jobs, the trickiest customers, and the extra burden of teaching someone beside them. If leadership treats that as free labor, those people can wear down fast.

This is one reason the mentor gap should matter to owners, even those who aren’t thinking about the workforce at a national level. It shapes capacity, consistency, and retention throughout the trades.

The cost for apprentices is just as real.

While businesses feel the squeeze over time, apprentices feel it almost immediately. 

They may enter a trade eager to learn, only to discover that the company they joined has no real teaching structure. They ride along, watch, guess, and hope they’re not slowing everything down. Some figure it out more or less on their own; many don’t.

The DOL’s Registered Apprenticeship Academy emphasized that mentorship supports both program completion and apprentice retention and engagement. In its 2025 mentorship event, DOL framed effective mentoring as a practical way to improve completion and engagement results.

Completion is crucial, and depends almost entirely on the quality of mentors. If there aren’t enough teachers—or if those who teach aren’t sufficiently versed in how to teach effectively—odds increase that apprentices will leave before they become productive.

More coordination is critical. 

Urban Institute’s 2025 paper states that apprenticeships remain underused— partly because funding levels vary and the broader funding picture is complicated, creating barriers to greater adoption. The report argues for more sustained and strategic investments, stronger interagency collaboration, and clearer navigation tools for states. 

Coordinated investment is vital, because training capacity won’t expand on goodwill alone. States and employers can fund classroom seats, but they also need enough instructors, coaches, mentors, and supervisors to help fill them.

The National Center for Construction Education and Research (NCCER) provides more context in its 2025 annual report. In 2025, more than 380,000 active learners were being taught by more than 31,000 instructors and administrators across more than 6,600 NCCER programs. That reach is impressive—and also a reminder that instructional capacity is a major issue in its own right.

What should businesses do differently?

The first step is to make mentoring a formal program. Identify the qualified mentors, establish what they’re expected to teach and how their quality of instruction will be reinforced. It’s also crucial that mentors’ time is protected, so they have adequate time to provide instruction. 

Choose your instructors carefully. Not every senior tech will have the right temperament to teach. That’s a different, and highly valuable, skill set. 

Second, companies should make mentor development part of their workforce strategy. Such development could include short mentor training sessions, clearer checklists, more formal feedback loops, and regular reviews of how apprentices are progressing under different trainers.

Third, leaders need to recognize mentoring as part of daily work, not extra work. If teaching is essential to the future labor pipeline, it belongs in workload planning.

Executed properly, financial and management support of structured mentoring programs could ease the largely overlooked instructor bottleneck in the skilled trades.