The weeks between a signed offer and the construction new hire start date are when a hire is most often lost, because the candidate is serving notice on a live project while their employer works to keep them. Hold a weekly contact rhythm, finish the paperwork early, agree the announcement, and plan week one before they resign.
Nothing happens the day after the signature. The offer letter is back, the search file is closed, and the hiring executive returns to a backlog that has been waiting three months for attention. On the other side, your new project executive has a start date in the calendar, a resignation they have not yet delivered and a boss who is about to take it personally. For the next five weeks only one of the two employers will be talking to them every day.
Why is the gap before the start date where hires are lost?
The candidate has decided and nobody else has adjusted yet. They are still running a job, still answering to an owner, still sitting in the Monday meeting, and their current employer has four or five weeks of daily contact in which to reopen the question.
Hiring used to feel finished at acceptance. A handshake held, and the notice period was an administrative pause. That assumption has aged badly. A senior construction leader who resigns today is resigning from a firm that cannot easily replace them, and the firm knows it. The response is rarely a single raise. It is a campaign: the president takes them to lunch, the owner on their job calls to say how much the relationship matters, a title that was “under review” for two years arrives in a week.
None of it is dishonest, and much of it is sincere. The pull is strongest where the candidate is most conscientious, which is the counteroffer trap in a sentence. The person who cares about leaving a job properly is the person you wanted, and also the person easiest to persuade that leaving now would be irresponsible.
Meanwhile your firm, having won, says nothing. The candidate hears one employer every day and the other not at all. Silence is among the causes of a late candidate withdrawal that an employer controls.
What should an employer do between offer and start date?
Treat the notice period as the first phase of employment. Give one named person a weekly contact rhythm, complete the paperwork in the first week, agree the announcement together, and send the plan for week one before the candidate has finished handing over.
| Week | Employer action | Risk it covers |
|---|---|---|
| Signature week | Hiring executive calls the day after; agree the resignation date | Second thoughts before the resignation |
| Resignation week | Call the evening they resign; ask what was said | The counteroffer arriving unanswered |
| Notice, each week | One call, one useful document (org chart, backlog, the job they inherit) | Silence while the other side talks daily |
| Two weeks out | Agree announcement wording and timing; send the week-one plan | Their team or owner hearing it sideways |
| Final week | Confirm equipment, vehicle, site access, first-day host | A first morning that looks unprepared |
The paperwork belongs early for a practical reason. Federal payroll setup, described in the IRS employer’s tax guide, and employment eligibility verification on Form I-9 both have to be done for every new employee. Any check the offer depends on belongs in the same week, and our note on background checks sets out what each one verifies. Expect the candidate to keep checking you in the same weeks, on the record our note on what candidates check describes: who left, the work behind the seat, the safety and payment history. A candidate who has filled in forms, chosen benefits and seen their name on an org chart has started moving. One who has received nothing since the offer letter is still deciding, whatever they signed.
Three smaller things carry more weight than their size suggests:
- Send the drawings and the schedule for the job they will inherit, once any confidentiality terms are signed.
- Introduce one future peer by phone, so there is a second voice at your firm.
- Ask about the family, especially when the move involves a relocation.
The call on resignation evening is the one nobody makes. It is also the hour when the counteroffer conversation is fresh and your new hire is sitting in a truck wondering whether they have made a mistake.
What if the new hire asks to push the start date?
Ask what the date is tied to before you answer. A project milestone and a bonus payment date are legitimate reasons with a fixed end. A vague request for “a couple more weeks” is neither, and it often means the current employer is still negotiating.
A milestone request deserves respect. A leader who wants to reach substantial completion or a turnover date before leaving is showing the conduct you hired, and the same conduct is described from the other side in resigning mid-project. Agree the milestone, put a calendar date on it in case it slips, and keep the weekly call going.
A bonus date is arithmetic. If the candidate forfeits a payment by leaving three weeks early, you can wait three weeks or you can make them whole. Either is a decision. Leaving it unspoken is how you find out in the last week that they stayed for the money.
Relocation stretches every one of these. A project executive moving from Tampa to San Antonio has a house to sell and, as often as not, a school calendar to work around, and the honest start date may be the end of a semester. Hear that in the offer conversation and you can plan for it.
How long is the window, really?
Longer than most hiring executives carry in their heads. In a worked example, a candidate signs, takes 3 days to resign, serves 28 days of notice on a live job and takes 7 days off before starting: 38 days in which the hire can still come apart.
These are illustrative figures, chosen to be ordinary, and your own will differ. What matters is where the days fall. Of the 38, 28 are spent inside the other firm’s building.
For context on why the current employer fights, the Bureau of Labor Statistics publishes employee tenure figures by industry and occupation. A leader with years at one contractor carries owner relationships and job history that do not transfer to a successor in a month.
The first week is planned before the resignation
A hire who resigns knowing exactly what the first five days hold is harder to talk out of leaving. Write the week down: which job they walk on Monday, who they meet, which decision becomes theirs on Friday. The longer plan follows the shape in onboarding a leader.
A search is finished when the person is at the desk, so the notice period belongs in the search plan. It matters most to employers running confidential executive search for mandates that cannot be publicly posted, where the incumbent, the team and the owner all learn the news inside the same few weeks.
Until the start date arrives, an offer letter is a record of what somebody intended on one afternoon.
Sources and further reading
- IRS Publication 15, employer’s tax guide
- USCIS Form I-9, employment eligibility verification
- BLS tenure release, employee tenure summary