Why a Bad Supervisor is Your Most Expensive Employee
- 3 days ago
- 8 min read
Written by Maynard Hebert, Keynote speaker/ Consultant
Maynard Hebert is a Red Seal heavy-equipment expert, award-winning shovel technician, and the author of Onward Buttercups. He is a workplace culture specialist who teaches teams and leaders how to communicate better, work smarter, and build trust in high-pressure environments.
Most business owners know their big expenses. Payroll. Insurance. Fuel. Rent. Equipment. Parts. Taxes. The coffee machine that somehow costs more than a small used car. They track the obvious stuff because the obvious stuff shows up on statements. But there is one cost hiding in plain sight that quietly drains more money, morale, and momentum than most owners realize.
A bad supervisor. Not just a grumpy one. Not just a rough-around-the-edges one. I am talking about the kind of supervisor who turns good employees into job seekers, productive teams into survival groups, and healthy workplaces into emotional potholes with fluorescent lighting. The most expensive person on your payroll is not always your highest-paid employee. Sometimes it is the supervisor running good people out the door.
The hidden cost
A bad supervisor does not always look expensive at first. They may show up early. They may know the work. They may answer emails fast. They may even sound confident in meetings. That is what makes them dangerous. From the outside, they look like they are holding the operation together. But inside the team, everyone knows the truth. They create tension. They confuse expectations. They punish honesty. They play favourites. They turn simple conversations into defensive maneuvers. They make people feel smaller every time they open their mouth. Because they are technically “getting the job done,” leadership often ignores the damage. That is like ignoring an oil leak because the engine still starts. Eventually, something expensive is going to seize.
People start leaving
A bad supervisor rarely destroys a business in one dramatic moment. They do it one resignation at a time. First, the strong people get tired. These are the reliable employees who used to care. The ones who trained new hires, stayed late when needed, solved problems quietly, and protected the team even when no one noticed. They do not usually quit loudly. They just start updating their resume.
Then the average people become disengaged. They stop volunteering ideas. They stop going the extra mile. They do exactly what is required and not one ounce more. That is when you start hearing phrases like, “It is what it is,” which is workplace code for, “I used to care, but leadership beat it out of me.”
Then the new people do not stay long enough to become useful. They arrive, sense the dysfunction, and start looking for the exit before they even learn where the bathroom is. The owner sits there wondering why hiring has become so hard. Sometimes the problem is not recruiting. Sometimes the problem is what new employees walk into.
The vacancy builder
A good supervisor builds people. A bad supervisor builds vacancies. That may sound harsh, but I have seen it too many times to soften it now. Some supervisors are so damaging that their real output is not productivity. It is turnover. They might hit today’s target, but they destroy tomorrow’s workforce to do it. They get results through fear, pressure, shame, and control. For a short time, that can look effective. People move fast when they are scared. But fear is a terrible long term operating system. It creates compliance, not commitment. Employees may obey a bad supervisor, but they will not trust them. They will not bring forward problems early. They will not admit mistakes. They will not suggest improvements. They will protect themselves first and the company second. That is not loyalty. That is survival with a paycheque.
The expensive ripple
When one good employee leaves, the cost is not just the cost of replacing them. That is where many companies underestimate the damage. You lose their experience. You lose their shortcuts, their judgment, their relationships, their memory, and their ability to spot trouble before it gets expensive. You lose the confidence they gave the rest of the team. You lose the informal leadership they provided without asking for a title.
Then the remaining employees absorb the extra workload. They get tired. They get frustrated. They start wondering if they should leave too. Now overtime goes up. Mistakes go up. Morale goes down. Customers notice. Supervisors get more stressed. Management starts pushing harder. The team gets weaker. The cycle keeps feeding itself. All because one person in a leadership position was allowed to keep poisoning the well. A bad supervisor is not a personality issue. A bad supervisor is a business risk.
Busy is not effective
One of the biggest mistakes owners make is confusing activity with effectiveness. A bad supervisor can look incredibly busy. They walk fast. They talk loud. They have a phone glued to their ear. They always seem to be in the middle of something urgent. But urgency is not leadership. Sometimes urgency is just poor planning wearing work boots. I have watched supervisors create fires all week and then act like heroes for holding the hose. That is not leadership. That is arson with a timesheet. The real question is not, “Are they busy?” The real question is, “Are people better after working under them?” If the answer is no, you have a problem.
Everyone already knows
Here is the funny part. Most of the time, everyone already knows who the bad supervisor is. The employees know. The lead hands know. The customers often know. The receptionist knows. The guy who fixes the vending machine probably knows. The only person who seems surprised is the one with the authority to do something about it. That happens because bad supervisors often manage upward better than they manage downward. They know how to sound organized to ownership while creating chaos beneath them. They bring problems without context. They blame employees before examining systems. They use phrases like “nobody wants to work anymore” when what they really mean is “nobody wants to work for me anymore.” That line matters. Because when a supervisor keeps losing people, eventually you have to stop blaming the people leaving and start examining the person they are leaving.
The loyalty lie
Bad supervisors love demanding loyalty. They want employees to care about the company, protect the team, work hard, stay late, and go the extra mile. But they often offer very little loyalty in return.
They correct publicly and praise privately, if they praise at all. They protect themselves first. They throw employees under the bus when pressure comes from above. They expect respect because of their title instead of earning it through behaviour. That is not leadership. That is renting authority from the company and charging interest to the workforce. Real loyalty is reciprocal. Employees stay loyal when they know leadership is fair, consistent, and willing to stand beside them when things get uncomfortable. If people only feel valued when production is good, they will not trust you when production is bad. Trust is where retention lives.
Supervision is a skill
Too many companies promote good workers into supervisory roles and assume the rest will sort itself out. It usually does not. Being good at the work does not automatically make someone good at leading workers. A great mechanic can become a terrible supervisor. A strong operator can become a weak foreman. A top salesperson can become a manager who burns out the entire sales team. Technical skill and leadership skill are not the same thing. That does not mean these people are hopeless. It means companies need to stop treating supervision like a reward and start treating it like a craft. Supervisors need training in communication, accountability, conflict, coaching, expectations, and emotional control. Especially emotional control. If a supervisor loses their mind every time pressure shows up, the team learns to hide problems instead of solving them. A leader who cannot regulate themselves will eventually destabilize everyone around them.
The owner blind spot
Small and medium business owners are especially vulnerable to this problem because they often trust supervisors to protect the business. That trust is understandable. Owners are busy. They cannot be everywhere. They need people they can rely on. But blind trust is not leadership. If turnover is high, morale is low, and good employees keep leaving, the owner has to get curious. Not defensive. Curious. What is happening between the supervisor and the team? Are expectations clear? Do employees feel respected? Are mistakes coached or weaponized? Does the supervisor solve problems or create them? Do people improve under their leadership, or do they shrink? Those questions matter because the supervisor is often the daily face of the company. Employees may work for the business on paper, but they experience the business through their immediate leader. To the employee, the supervisor is not just a supervisor. The supervisor is the company with keys.
Culture follows tolerance
Every workplace culture is shaped by what leadership tolerates. If you tolerate disrespect, disrespect becomes culture. If you tolerate blame, blame becomes culture. If you tolerate fear, fear becomes culture. If you tolerate weak supervision, turnover becomes culture. You do not fix that with slogans. You fix it by addressing the behaviour. Owners sometimes avoid confronting bad supervisors because they are afraid of losing them. But here is the question, how many good employees are you willing to lose to keep one bad leader comfortable? That is the math. Not the emotional math. The business math. Sometimes the most profitable thing a company can do is stop protecting the person everyone else is recovering from.
Better supervisors build better businesses
A strong supervisor changes everything. They create clarity. They reduce drama. They correct early. They listen before they lecture. They hold people accountable without humiliating them. They make the work feel hard but fair. That last part matters. Good employees do not need easy work. They need fair work. They need clear expectations, steady leadership, and a supervisor who does not turn every problem into a personal attack. When supervision improves, retention improves. Communication improves. Productivity improves. Safety improves. Customer experience improves. Reliable leadership creates reliable teams. Reliable teams make businesses stronger.
Final thoughts
The most expensive person in your company may not be the one with the biggest wage. It may be the supervisor who keeps turning good employees into former employees. A bad supervisor costs more than wages. They cost trust. They cost experience. They cost momentum. They cost reputation. They cost the quiet confidence that keeps good teams together. If you are an owner, do not just ask why people are leaving. Ask who they are leaving. Because sometimes the problem is not the labour market. Sometimes the problem is standing in your shop, holding a clipboard, wondering why nobody wants to work anymore. A good supervisor builds people. A bad supervisor builds vacancies, and vacancies are expensive.
Onward, Buttercups.
Read more from Maynard Hebert
Maynard Hebert, Keynote speaker/ Consultant
Maynard Hebert is a Red Seal Heavy Equipment Technician, author, and host of the Gears of Trust podcast. Drawing on decades in the mining and oil sands industry, he helps organizations strengthen communication, reduce turnover, and build teams that actually work together. His book, Onward Buttercups, has become a practical guide for mechanics, supervisors, and leaders looking for real-world, human-centered solutions to workplace chaos. Maynard blends technical expertise with humour, storytelling, and straight-talk leadership. He was recognized as Mader Mining’s 2024 Outstanding Employee of the Year. Today, he speaks, teaches, and consults across Canada on reliability, culture, and team performance.
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