Key Person Provisions: Because People, Not Companies, Build Projects
“The cemeteries of the world are full of indispensable men.” — Charles de Gaulle
With all due respect to the General, he clearly never ran a construction project. In construction, the person running your job matters. Not in a vague, motivational-poster kind of way. In a very specific, this-is-the-difference-between-a-successful-project-and-a-nightmare kind of way. The project manager who sat in your preconstruction meetings, who understands the phasing, who knows why the MEP coordination sequence was set up the way it was, who has relationships with your team and the Owner’s team. That person is not interchangeable. And if they disappear six weeks into the job and get replaced by someone who’s never read the drawings, you have a problem.
This happens all the time. A contractor or consultant sells the A-team during the proposal and interview. Experienced PM. Sharp superintendent. The people who won the job. Then, once the contract is signed, those people quietly get moved to a larger project. Not out of anything nefarious, but usually out of a necessity. A fire happens on another project and they are needed to put it out. The B-team (or worse, the D-team) then shows up. Nobody tells you. And by the time you realize it, you’re three months in and the damage is already underway.
A key person provision is the contract tool that prevents this. And in my experience, it is dramatically underused.
What Is a Key Person Provision?
A key person provision is a contract clause that identifies specific individuals who must remain assigned to the project and sets conditions around their removal or replacement. It turns a handshake expectation into an enforceable obligation. The concept is simple. You hired this company in large part because of who they were putting on your project. The key person clause says: those people stay, or we have a conversation about it before anything changes. In its most basic form, a key person provision does three things. It names the key person or persons. It restricts the other party from removing or materially reducing their involvement without consent. And it establishes what happens if the key person is removed anyway.
The Real-World Problem This Solves
Construction projects run on people. And the gap between the people a company puts forward during pursuit and the people who actually show up to manage the work is one of the most common sources of frustration in the industry. The bait-and-switch problem is the most obvious one. But key person provisions address a few other issues that are just as important.
Loss of institutional knowledge.When a key person leaves a project, they take context with them. The informal agreements, the workarounds, the history behind decisions that aren’t fully captured in the meeting minutes. That knowledge loss creates real risk, especially on complex jobs.
Reduced accountability.When the person who made commitments during preconstruction is the same person managing the work, there’s a natural accountability loop. They own their promises. When someone new steps in, that loop breaks. Commitments become disputed. Assumptions become contested. Everything gets harder.
Downstream schedule and cost impact.A staffing change on a key role almost always creates a learning curve. That learning curve costs time. Time costs money. On a fast-track project, it can cost a lot of money.
How a Well-Drafted Key Person Clause Works
A good key person provision is not complicated. But it needs to be specific enough to actually mean something when it matters. Here’s how I typically structure them.
Name the individual.The clause should identify the key person by name and role. “Subcontractor’s Authorized Representative” is fine as a defined term, but somewhere in the contract (usually in an exhibit or the signature block), there should be a real name attached. Vague references to “qualified personnel” are not key person provisions. They’re wishful thinking.
Require continuous assignment.The clause should state that the named individual will remain actively and continuously assigned to the project. Not just listed on the org chart. Actually working on the job. The language should cover both outright removal and the quieter version of the problem: materially reducing the person’s level of engagement. Moving someone from full-time to “available as needed” is a reduction that should trigger the provision. It is good practice to have objective requirements here.
Require prior written consent for changes.If the other party wants to remove or reassign the key person, they need your written consent first. Not after the fact. Not as a courtesy notification. Before the change happens. This is the core mechanism. It gives you a seat at the table and forces a conversation before you lose the person you’re counting on.
Set replacement standards.People leave. That’s reality. A good key person provision acknowledges this by allowing replacement, but only with someone of comparable qualifications and experience, subject to your review and approval. The replacement standard matters because without it, the other side can comply with the consent requirement by proposing a replacement who isn’t remotely equivalent.
Establish consequences for breach.This is the piece most people miss. A key person provision without a consequence is a request, not a requirement. The strongest version treats an unauthorized removal as a material breach of the contract, which gives you real leverage: the right to withhold payment, pursue damages, or terminate. You may never exercise those rights. But having them changes the dynamic entirely.
Why This Is a Powerful Risk Allocation Tool
I think key person provisions are underrated because people think of them as soft clauses. They’re not about money or scope or schedule, so they get treated as less important. A key person provision does something that most contract clauses don’t: it aligns expectations from day one. When you negotiate and sign a key person clause, both parties are acknowledging, in writing, that the specific people assigned to this project matter. That’s not a small thing. It means the other side can’t later claim that a staffing change is routine or immaterial. The contract says otherwise. It also protects your preconstruction assumptions. If you selected a subcontractor based on the qualifications and experience of the team they proposed, and that team changes materially, the basis for your selection has changed. The key person provision gives you a mechanism to address that before it creates problems on the jobsite.
And here’s the practical reality: most of the time, the provision never gets invoked. Its value is deterrent. The other side knows you have the right to object, so they think twice before pulling someone off your job to chase a different project. That’s exactly how a good contract provision should work.
A Quick Scenario
You’re a GC on a $30 million healthcare renovation. During the interview process, your mechanical subcontractor presented a project manager with 20 years of healthcare experience and specific expertise in infection control phasing. That PM was a significant factor in your selection decision. Eight weeks into the job, the sub’s branch manager pulls that PM to lead pursuit on a larger project. A replacement shows up. He’s competent, but he’s never managed healthcare work and doesn’t understand the phasing constraints that make this project different from a typical commercial build.
Without a key person provision, your options are limited. You can complain. You can escalate to the sub’s executive team. But you don’t have a contractual right to object or a mechanism to enforce the commitment that was made during selection. With a key person provision, you have leverage. The sub was required to get your written consent before making the change. They didn’t. That’s a material breach. You don’t necessarily want to terminate, but you now have the ability to demand an equivalent replacement, negotiate additional protections, or hold the sub accountable for any schedule or cost impact caused by the transition. The conversation is entirely different.
Addressing the Pushback
When I include key person provisions in contracts, I get pushback. The most common objection is: “We can’t guarantee that a specific person will be available for the entire project.” Fair enough. People get promoted, leave the company, have health issues. Life happens. A well-drafted key person provision doesn’t require a guarantee of permanent availability. It requires consent before a change and a commitment to provide an equivalent replacement. That’s reasonable. It’s also reasonable to carve out things like retirement, health issues, or a person taking a different job.
The second objection is: “This limits our operational flexibility.” Yes, it does. That’s the point. When you hire a contractor or consultant based on a specific team, you’re paying for that team. The key person provision makes sure you actually get them. If the other side views that as an unreasonable constraint, that tells you something about how they manage staffing.
The third objection, usually unspoken, is that the company knows they routinely move people between projects and doesn’t want to be contractually prevented from doing so. That’s exactly the behavior the provision is designed to address. The fact that someone resists a key person clause is useful information during the selection process.
The Bottom Line
Construction projects succeed or fail based on the people doing the work. A key person provision is one of the simplest, most effective tools available to protect against the single most common staffing problem in the industry. If you’re selecting contractors, subcontractors, or consultants based on the specific people they’re putting on your project, put that expectation in the contract. De Gaulle may have been right about cemeteries. But on a construction project, some people really are indispensable. Your contract should reflect that.
This article is for informational purposes only and does not constitute legal advice. Every construction project and contract is different. If you have specific questions about key person provisions or staffing-related contract language, consult with a construction attorney who can review your contract and advise based on your particular circumstances.
About the Author
Nate Simon is the founder of Simon Law, PLLC, a construction law firm based in Lexington, Kentucky (www.simonlawky.com). He represents general contractors, subcontractors, owners, and suppliers across the United States. Before founding Simon Law, Nate spent years as in-house counsel for a large general contractor, where he managed contract negotiation, claims, and dispute resolution on projects totaling billions of dollars in value. He can be reached at nate@simonlawky.com.
