Why Your Best Technician Should Never Train the New Hire Alone

by | Articles, Leadership, Maintenance and Reliability

The Default Approach to Maintenance Training

A new technician starts on Monday. The supervisor is busy. The training program is either outdated or doesn’t exist. So the department falls back on the easiest option: pair them with a senior tech and let experience do the teaching.

“Go shadow Mike for a few weeks. He’ll show you how we do things around here.”

It sounds reasonable. Mike is your best wrench. He’s been with the company for 15 years. He knows every machine in the facility. Who better to teach the new person?

Here’s the problem: Mike is an outstanding technician. He’s not a trainer. And those are two very different things.

What Gets Passed Down Without a Plan

When training is unstructured, the senior tech teaches the new hire how they do the job. Not how the job should be done according to the procedure. How they personally do it. With every shortcut, workaround, and personal preference they’ve developed over 15 or 20 years.

Some of those shortcuts are brilliant. Some of them are dangerous. And the new hire has no way to tell the difference.

What Should Transfer What Actually Transfers
Proper lockout/tagout procedures per the written program. "We don't really do it that way. Just flip the breaker and put a tag on it."
Torque specifications and precision installation practices. "I just tighten it until it feels right. You'll get the feel for it."
Complete work order documentation with failure codes. "Just write 'fixed it' and close it out. Nobody reads those anyway."
Equipment-specific maintenance procedures. "I don't use the procedure. I've done this a hundred times."
Proper lubrication methods, volumes, and intervals. "Give it a few pumps of grease and you're good."

See the pattern? Institutional knowledge gets replaced by personal habits. And those habits, once learned, are incredibly hard to undo. The new hire doesn’t know any better. They trust the veteran. Why wouldn’t they?

Institutional knowledge gets replaced by personal habits. The new hire doesn’t know any better. They trust the veteran. Why wouldn’t they?

This Isn’t a Knock on Senior Technicians

Let’s be clear: senior technicians should absolutely be involved in training new hires. Their hands-on knowledge is irreplaceable. The point is that they shouldn’t be the only mechanism.

A seasoned tech can teach a new hire things no classroom or manual ever will: the sound a motor makes before it fails, the feel of a properly tensioned belt, the visual cues that something is off with a process. That institutional knowledge is gold.

But without a structure around it, the good knowledge transfers alongside the bad habits. And nobody is checking which is which.

What Structured Onboarding Actually Looks Like

Week 1: Orientation and Foundational Standards

Before the new hire touches a tool, they need to understand the facility’s safety program, the CMMS, the work order process, and the maintenance department’s standards and expectations. This comes from supervision or a dedicated trainer. Not from a peer on the floor.

Weeks 2 Through 4: Supervised Skill Building

Now the new hire can work alongside a senior technician, but with a structured checklist of competencies to demonstrate. The supervisor or trainer reviews progress weekly. The senior tech provides hands-on guidance, but the standard against which the work is measured comes from the written procedures, not from the mentor’s personal methods.

Weeks 5 Through 12: Progressive Independence

The new hire begins taking on tasks independently, with the senior tech available for questions but not directing every move. The supervisor audits completed work periodically to verify quality. Any gaps in skill or knowledge get addressed through targeted training, not just “watch Joe do it again.”

“The senior tech provides hands-on guidance, but the standard against which the work is measured comes from written procedures, not personal methods.”

Four Things Every Training Program Needs

  • A written competency checklist for each maintenance role. Include safety, CMMS usage, precision practices, tool proficiency, and equipment-specific knowledge. Check off each item only after the new hire demonstrates the skill, not just watches it.
  • A trainer or supervisor as the primary training authority. The senior tech is a valuable resource, but they shouldn’t own the training plan. Someone with the broader organizational perspective needs to be accountable for what gets taught and how.
  • Quality audits during and after the training period. Supervisors should randomly check completed jobs against the procedure. If the new hire is already cutting corners in month two, the training process has a leak.
  • Separate debriefs with the mentor and the new hire. Ask the new hire what they learned. Ask the mentor how the new hire performed. Compare those answers to the written standards. The gaps between those three data points will tell you exactly where to focus.

The Real Cost of Getting This Wrong

Industry data consistently shows that roughly 63% of maintenance activity is self-inflicted, meaning maintenance caused more maintenance. Bad installation practices, improper lubrication, skipped procedures, incomplete repairs. A significant portion of those defects can be traced back to how the technician was trained.

Think about the economics. Recruiting and hiring a maintenance technician in today’s labor market can easily cost $10,000 to $15,000 when you factor in recruiting fees, onboarding time, and lost productivity during the learning curve. Investing a fraction of that in a structured 90-day training program protects that investment. Handing the new hire to an unsupervised buddy system and hoping for the best puts it at risk.

63% of maintenance activity is self-inflicted. How much of that traces back to how the technician was trained in the first place?

The First 90 Days Set the Trajectory

The habits a new technician develops in their first three months tend to stick for years. The standards they’re held to (or not held to) in those early weeks become their baseline for what “good enough” looks like.

Pair them with good mentors, yes. But give them structure, standards, and supervision too. The first 90 days set the trajectory for their entire career at your facility. That window is too important to leave unstructured.

Author

  • Andrew Gager

    Andrew Gager, CEO of AMG International Consulting, Inc., is an industry-leading expert in manufacturing best practices, maintenance systems, and supply chain optimization, with over 20 years of Operations Leadership experience spanning from shop floor operations to plant management. The last 20+ years working with M&R organizations across industries such as manufacturing, oil & gas, food & beverage, pharma, and transportation, specializing in OpEx, reliability-based solutions and materials management. A Certified Maintenance Reliability Professional (CMRP), Certified in Planning & Inventory Management (CPIM) and Six Sigma Green Belt (CSSGB), Andrew is a sought-after speaker and trainer, known for his dynamic presentation style. He is regularly published in multiple trade periodicals. He holds a BS in Business & Operations Management from Rochester Institute of Technology.

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