Here is how it usually goes. Your best operator has been with you four years. The foreman quits. You promote the operator on a Friday and on Monday he is running the crew he was on the week before, including the guy he used to ride to the job with.
Nobody tells him what the job actually is. He gets a raise and a truck and is expected to figure it out. Six months later the crew is turning over, the work is slower than it was, and you are wondering whether you made a mistake.
You did not pick the wrong guy. You handed him a different job and called it a promotion.
The job changed and nobody said so
As an operator, you are paid for what you produce. Do good work, run the machine well, get the job done.
As a foreman, you are paid for what the crew produces. That is a completely different job, and the instincts that made him a great operator now work against him. He wants to jump on the machine and do it himself, because he is faster. Every time he does, he is not planning the next phase, not watching the new guy make a mistake, not talking to the customer.
The new foreman who cannot stop doing the work is the single most common failure in this industry, and it looks like dedication, which is why it goes uncorrected for months.
Say out loud what he owns now
Most new foremen are never told what they are responsible for. Write it down and say it in plain words.
He owns whether the crew goes home in one piece. He owns whether the job makes money, not just whether it gets done. He owns the customer's experience on site. He owns the new guy being useful in three weeks. He owns telling you the truth about what is happening out there, especially when it is bad.
Notice how little of that is about running equipment. He will still run equipment. That is not what he is being paid for anymore.
The old crew problem
Last week they were peers. Now he has to correct them, and both sides feel it.
Most new foremen handle this one of two ways, and both are wrong. Some stay everybody's buddy and never correct anything, and standards slide until you have to step in. Others overcorrect, get hard overnight, and the crew decides the promotion went to his head.
The way through is being the same person with different responsibilities. He does not need to stop being friendly. He needs to be consistent, address things directly and privately, and never let something slide because of who did it. Crews will accept a friend who holds a standard. They will not accept a friend who holds it for some people and not others.
Teach the numbers
A foreman who does not know what the job bid at cannot protect it. He does not know whether burning two extra hours matters, whether the extra work the customer asked for is a change order or a gift, or whether the crew being one man short today just cost you the margin.
Give him the number. Most owners will not, out of a fear that it gets out. The result is a foreman making expensive decisions blind, all day, every day. He does not need your full financials. He needs to know what this job is supposed to make and what eats it.
Let him be wrong on purpose
The fastest way to keep somebody from becoming a foreman is to overrule him in front of the crew. Do it twice and the crew learns to route around him, and he stops making decisions at all.
Let him make the call. If it is wrong and not dangerous, let it play out and talk about it in the truck after. Judgment is built by making decisions and living with them, which is a slower and more expensive way to learn than being told, and the only one that works.
Check on him like you would a new hire
A new foreman is a new hire, in a job he has never done, usually with no training. But because he has been with you four years, nobody checks on him.
Fifteen minutes a week for the first few months. What is hard right now. Who on the crew is a problem. What did you decide this week that you were not sure about. That conversation catches the things that otherwise show up six months later as turnover.
Where to start
If you have a foreman you promoted and never trained, start there this week. Tell him what he owns, give him the number on his next job, and put fifteen minutes on the calendar. That is more foreman development than most companies in this industry ever do.
The foreman bench is usually what decides whether a contractor can grow past one or two crews, which is why it comes up in nearly every coaching conversation we have. If you want to work through yours, that is what coaching is for.