A construction stay bonus works when it is tied to a project or transaction milestone, sized at a fifth to a quarter of base, paid in two installments, and backed by a hiring plan for the day after it pays. It buys time, not loyalty. Used during a sale, an ESOP transition or a backlog surge, it holds the bench through the window the firm cannot afford to lose it. Used as a substitute for a search, it delays the departure and adds a cliff.
A stay bonus does not make anyone stay. It makes them stay until the date on the letter, which is a different thing, and the contractors who confuse the two find out the day after. A construction stay bonus is a good instrument for exactly one job: holding a project manager, a chief estimator or a superintendent through a window the firm cannot afford to lose them in.
The window is the whole design. Most retention agreements never name it.
When do construction stay bonuses work?
When there is a window with an end. Construction stay bonuses work during a sale, an ESOP transition, a backlog surge, or the run-up to a milestone one departure would put at risk. As a general retention tool they fail, because a bonus without a window is a raise with a cliff.
The four windows share a shape: a date after which the firm can survive the departure, and a period before it during which it cannot.
- The sale. A buyer prices a contractor on its backlog and its bench, and the leadership continuity after an acquisition piece sets out how quickly the bench walks once the deal is announced. A stay bonus through closing plus twelve months is the standard instrument, and the buyer usually funds it.
- The ESOP transition. The IRS rules govern the plan; the ESOP transition piece describes what the transaction does to the leadership bench. The window is the year between the announcement and the point at which the new ownership structure is credible to the people who were not selling.
- The backlog surge. A firm that has just won $200 million it did not expect needs every project manager it has for eighteen months while it hires, and the hiring when backlog doubles piece prices the gap. The bonus holds the bench while the search fills it.
- The project milestone. A chief estimator ten weeks from a GMP submission, a project manager six months from substantial completion on a job with liquidated damages. The window is the milestone, and the bonus pays on it.
Outside those four, a stay bonus is usually a counteroffer with a delay built in, and the construction counteroffer piece explains why that instrument rarely works past a year.
How should a stay bonus for a project manager be structured?
On a milestone, in two installments, at a fifth to a quarter of base, with a clear good-leaver term. A construction stay bonus for a project manager on a $150,000 base is typically $30,000, half at an interim milestone and half at substantial completion or twelve months after closing, forfeited on resignation before the date.
The structure is what separates a retention agreement from a delayed resignation.
| The usual version | The version that works |
|---|---|
| Paid on a calendar date | Paid on a project or transaction milestone |
| One payment at the end | Two installments, the larger at the end |
| Sized at a month’s pay | Sized at a fifth to a quarter of base |
| Silent on termination | Pays in full if the firm ends employment without cause |
| Attached to a non-compete | Kept separate from any restrictive covenant |
| No plan for the day after | A search running before the bonus pays |
The calendar date is the most common mistake, because it invites the person to leave the day after it, having done the arithmetic. A milestone ties the payment to the thing the firm actually needed them for, and if the milestone moves, the bonus moves with it. The good-leaver term matters for the opposite reason: a project manager who is asked to stay through a sale and is then let go by the buyer a month after closing should be paid, and an agreement that is silent on that point will be read against the firm by everyone else on the bench.
The tax and wage treatment is part of the structure rather than an afterthought. Longer horizons often call for phantom stock instead. A stay bonus is a supplemental wage under the IRS employer guide, withheld accordingly. For an exempt project manager under the DOL executive exemption it does not touch overtime; for a non-exempt working superintendent it may have to be included in the regular rate under the FLSA, which changes what it costs. Counsel should read the letter before it goes out, and the DOL overtime rules are the reason.
What the bonus is protecting is worth pricing before the size is set.
What does a mid-job project manager departure cost?
Far more than the bonus. On a $40 million commercial job, a project manager who leaves at month ten costs roughly $400,000 in search, ramp, schedule slip and margin fade. A $30,000 stay bonus is a fifth of a $150,000 base, and holding six project managers through a sale costs about $180,000.
Set the three figures beside each other and the bonus is the smallest.
The illustrative figures are one job and one transaction. The mechanism behind the $400,000 is the cost of a failed project manager hire: the replacement search, the months in which the project executive is carrying the job, the schedule that slips while the replacement learns the subs, and the change-order position that goes soft in the handover. The CFMA benchmarks on margin fade are where that shows up in the firm’s numbers, and the JOLTS series shows construction quit rates high enough that the risk is not theoretical.
The size of the bonus follows from the size of the exposure, not from what the person asks for. The OEWS tables price the base in Atlanta and Houston; the exposure prices the bonus.
The legal frame around it has changed recently, and it is the next question.
What are the legal and tax limits on stay bonuses?
Few on the bonus itself, more on what firms attach to it. A construction stay bonus is a contractual promise to pay on a condition, taxed as supplemental wages, and enforceable as written. The trouble starts when the letter also carries a non-compete, whose enforceability varies by state and has been contested federally.
The bonus and the covenant should be separate documents, for a practical reason as much as a legal one.
The FTC rule that would have banned most non-competes was set aside in federal court in 2024, and the NLRB general counsel had separately taken the position that many non-competes for non-supervisory employees violate the National Labor Relations Act. The construction non-compete piece sets out where that leaves a contractor in Texas or Georgia. A stay bonus that is conditional on signing a non-compete of doubtful enforceability is a stay bonus the project manager’s lawyer will tell them to sign and ignore, which is the worst of both instruments.
The tax side is simpler. Supplemental wage withholding under the IRS employer guide applies, the payment is compensation in the year received, and a bonus that vests on a milestone more than a year out should be reviewed by counsel for deferred compensation treatment before the letter is signed. The Department of Labor prevailing wage rules on federally funded work do not reach a salaried project manager’s bonus, but they do reach a working superintendent’s, which is one more reason the letters should not be identical across seats.
Which leaves the part most firms skip.
Why does a retention agreement need a hiring plan behind it?
Because the bonus pays and then the person is free. A construction stay bonus that holds a chief estimator through a sale has bought twelve months, and a firm that spends them hoping has spent them badly. The plan is a search that starts when the bonus is signed and finishes before it pays.
The bonus is the window. The search is what happens in it.
In practice the sequence is: sign the retention agreements the week the transaction or the surge is announced, open the searches for the seats most likely to walk the same month, and aim to have the replacements or the successors in place two to three months before the bonuses pay. The replacing a retiring chief estimator piece describes the version of that for a known departure date, and the arithmetic is the same: the date is fixed, so the search has to be run against it.
Selah Talent Partners runs those searches as confidential executive search for mandates that cannot be publicly posted, because a firm in the middle of a sale or an ESOP transition cannot post a chief estimator search without telling the market what the retention agreements were for. The mechanics are set out in how a confidential construction search runs, and the confidential search process is timed to the window the bonus bought. The AGC release on the 2025 workforce survey and the Census Bureau spending series together explain why the window is rarely longer than the search takes.
Selah works with contractors and construction consultancies across the United States on preconstruction and estimating, project and construction management, and cost and commercial management, in commercial building and heavy civil. Candidates are never charged a fee at any stage.
Buy the date, then use it
The instinct on retention is to pay the bonus and hope.
The bonus buys a date. What the firm does with the time before it is the whole question, and the firms that get it right treat the signed retention letter as the start of a search, not the end of a problem. The project manager who stays through closing and then leaves the week after the bonus pays did exactly what the letter asked. The firm that is surprised did not read its own letter.
Ask what the firm will have in place on the day the bonus pays, and whether that work has started.
If you are structuring retention around a sale, a transition or a surge and want to compare notes, get in touch.
Sources and further reading
- IRS employee stock ownership plans
- IRS employer guide supplemental wages and withholding
- DOL executive exemption fact sheet
- FLSA Fair Labor Standards Act overview
- DOL overtime pay rules
- Department of Labor prevailing wage on government construction contracts
- FTC non-compete rule
- NLRB general counsel memo on non-competes
- BLS OEWS construction manager wage tables
- BLS JOLTS job openings and labor turnover
- CFMA construction financial benchmarks
- AGC release 2025 workforce survey findings
- Census Bureau construction spending