Business Strategy
Construction Manpower Planning Across Multiple Jobs: Moving Crews Off the Whiteboard
A practical guide for self-performing contractors who still decide who goes where next week on a whiteboard, a spreadsheet and a lot of phone calls.
A manpower plan is a forecast of labor demand matched to the people who can meet it. A whiteboard only shows the second half.
Every Thursday afternoon, the same three people stand in front of the same whiteboard. Magnets with names get moved from one job column to another. Someone calls a superintendent to ask whether the crew on the hospital job can spare two journeymen next week. Someone else remembers that one of them has a certification about to expire. By Friday the board is set. By Monday, half of it has changed.
The whiteboard works because the people in front of it are good. It fails because it only shows who is where today. It does not show how much labor each job will need in three weeks, which skills are short, or whether the plan matched what actually happened.
This guide is for owners, operations managers and general superintendents at self-performing general and specialty contractors. It covers what a manpower plan needs to know, how to build one from data you already have, and what to measure.
A Manpower Plan Has Two Sides
Demand is the labor each job needs, by skill and by week. It comes from the remaining estimate and the schedule: if the job has 1,800 pipefitter hours left and eight weeks to finish, it needs roughly 225 hours a week, or about six people.
Supply is the people you have: their skills, credentials, home base, planned time off and current assignment.
The whiteboard tracks supply well. Demand usually lives in each project manager's head, which is why shortages surface on Monday instead of a month earlier.
An Example Demand and Supply Grid
| Skill | Week 1 | Week 2 | Week 3 | Week 4 |
|---|---|---|---|---|
| Journeyman pipefitters needed | 14 | 16 | 19 | 19 |
| Journeyman pipefitters available | 17 | 17 | 16 | 16 |
| Gap | +3 | +1 | −3 | −3 |
The example is illustrative, but the pattern is common: comfortable now, short in three weeks. Seen early, the gap is a decision about overtime, hiring, a subcontractor or resequencing. Seen on Monday, it is a scramble.
Building the Plan
- Turn each job's remaining estimate into weekly labor hours by skill
- List every worker with skills, credentials and availability
- Write the assignment rules your superintendents already use
- Compare demand and supply four to eight weeks out
- Publish assignments to the field, not just the office
- Track planned against actual hours every week
Start from the estimate
The remaining hours for each job come from the estimate and the hours already spent. If you track production against the estimate, the remaining hours are more reliable. If you do not, start with budget minus actual and refine from there.
Write down the assignment rules
Your best superintendent applies rules nobody has written down. Capture them:
Rules on paper can be checked automatically. Rules in a head get applied only when that head is in the room.
Keep credentials in the plan
Safety training, equipment operator cards and owner-specific site badges all expire. A plan that knows expiry dates can warn you before a worker is assigned to a task he is no longer cleared for.
Plan for work you have not won yet
Your backlog is only part of next quarter's demand. Add the jobs you are likely to win, weighted by how likely they are. A bid you expect to win half the time counts for half its labor hours in the plan. The result is rough, but it shows whether winning two more large jobs would leave you short of foremen, which is exactly the question estimating and operations should answer together before a bid goes out.
Publish to the field
A plan in the office is half a plan. Foremen and workers should see their assignment for the coming week on the phone they carry, and changes should reach them the same way.
What Published Case Studies Report
Across 22 published case studies that software firms wrote about general and specialty contractors, better visibility into jobs, costs or status was the result reported most often, in 11 of them. Faster turnaround and a replaced legacy system followed, at 7 each. The figures are self-reported by the firms that published them, and each describes a single project rather than an industry average.
- $50Mannual savings in project costs reported by a national home builder after replacing its legacy scheduling system
- 8.5%increase in production at the same builder
- 18%increase in employee yield from the builder's offline-capable field app
Self-reported results from case studies other software firms have published. See Sources & method below.
Where does your team sit? The 14-day Ops Efficiency audit measures it. Book the audit
What to Measure
Where to Start
Before buying anything, build the demand side for your three largest jobs in a simple grid and compare it with your current crew for the next six weeks. If the gaps surprise you, the plan is worth formalizing. A Systems Review maps how crew decisions get made today and what data they need. Our custom software development services build planning tools around your rules when packaged scheduling software does not fit. More guides for contractors are on the blog.
Sources & method
- National home builder, construction scheduling software and field app — published case study (Invonto)
- Mechanical contractor, workforce planning platform — published case study (SPARK Business Works, 2021)
Figures are self-reported results from case studies other software firms have published. Delta did not produce these results. Where a source says “up to”, so do we.
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