Define what manager capacity means in this decision
Manager capacity is not a headcount ratio. It is a period-specific time record. A manager who performs delivery, sales, quality review or regulatory work may have little residual time even with a small team; another manager may support a larger stable team because roles, systems and escalation demand differ. Record the actual work instead of importing a ratio.
| Input | Unit and horizon | Source class | Extraction-safe boundary |
|---|---|---|---|
| Manager time base | Hours per named week or month | Roster and working-time record | Not proof that every hour is safely available |
| Existing work | Hours on the same period | Calendar, workflow, time and delivery records | No silent removal of necessary controls |
| New-role manager demand | Hours by ramp stage | Role plan and labelled scenario | No universal onboarding or supervision amount |
| New-member output | Productive hours by the matching period | Role evidence and labelled sensitivity | No guaranteed productivity or demand |
Build the manager-time ledger before approving the role
Prerequisites, sequence and checkpoints
- Name the manager, team, role, decision period and working-hours basis. (not complete)
- Reconcile the manager’s available hours into own delivery, current coordination, administration and residual capacity. (not complete)
- Enter the new role’s onboarding, review, escalation and ongoing coordination demand separately. (not complete)
- Calculate any manager-time gap before entering the new member’s productive-capacity scenario. (not complete)
- Name the exact work that would be displaced, delegated or rescheduled; leave unresolved gaps visible. (not complete)
- Test lower, base and higher coordination cases, then compare actual manager and new-member hours at the review date. (not complete)
Keep manager demand and new-member output in separate ledgers
Residual manager hours = available manager hours − own delivery − existing coordination − required administration; coordination gap = max(0, new-member manager demand − residual manager hours)
- Available manager hours
- The manager’s selected working-time base after unavailable time is removed consistently (hours per declared period) — roster, contract and labelled time assumption
- Own delivery
- Customer or operational work the manager is committed to perform directly (hours per declared period) — delivery plan and time records
- Existing coordination
- Current one-to-one, review, scheduling, escalation and team-support work (hours per declared period) — calendar, workflow and time records
- Required administration
- Necessary management, compliance and operating work outside direct coordination (hours per declared period) — process records and labelled plan
- New-member manager demand
- Entered onboarding, review, escalation and coordination hours for the new role in the same period (hours per declared period) — role plan and labelled ramp scenario
- Coordination gap
- Manager demand that has no named capacity source in the scenario (hours per declared period) — calculated scenario
The new member’s productive hours are a separate scenario. Do not offset the manager gap with new-member output unless timing, competence and the displaced manager work are explicitly reconciled.
| Ledger row | Evidence to retain | Boundary |
|---|---|---|
| Manager available time | Named period, roster and unavailable-time treatment | No hidden overtime or cross-period hours |
| Own delivery | Accepted work, internal outcome and due period | Changing this row changes delivery capacity elsewhere |
| Current coordination and administration | Calendar, workflow and operating records | Necessary management work is not treated as waste |
| New-role manager demand | Onboarding plan, review cadence, escalation and enablement work | No generic ramp percentage or manager-span ratio |
| New-member output | Role-specific lower, base and higher productive-hours scenarios | Not counted before the relevant ramp period |
Expose the manager-time deficit before counting team growth
Reproducible user scenario
Fictional monthly hours for one manager and one proposed role. The scenario is tax-neutral and contains no wage, employment or productivity benchmark.
| Step | Input or arithmetic | Decision meaning |
|---|---|---|
| Current residual capacity | 160 available − 72 own delivery − 48 current coordination − 24 administration = 16 hours | Only 16 manager hours are unassigned in this entered month. |
| New-member manager demand | 30 onboarding, review and coordination hours | A user-entered role-plan assumption, not a benchmark. |
| Coordination gap | 30 new demand − 16 residual = 14 hours | Fourteen hours need a named source or remain unresolved. |
| Separate new-member capacity | 100 productive hours entered after the stated ramp checkpoint | Do not net 100 against the 14-hour manager gap without reconciling displaced work and timing. |
Test coordination demand, then name the displaced work
| Coordination case | Manager gap | Required decision record |
|---|---|---|
| Lower case | 20 new-member hours − 16 residual = 4-hour gap | Name the four hours that move; do not call the case feasible while they are hidden. |
| Base case | 30 − 16 = 14-hour gap | Resolve timing and displaced work before counting new-member output. |
| Higher case | 45 − 16 = 29-hour gap | Test whether role scope, sequence, enablement or start timing must change. |
| Rebalanced manager delivery | 160 − 58 delivery − 48 coordination − 24 administration = 30 residual; 30 − 30 = 0 gap | The 14 delivery hours removed need an owner and customer or operational consequence. |
Mistakes to prevent before the review date
- Do not use a generic span-of-control ratio as the manager-time input. (not complete)
- Do not count meetings twice across coordination and administration. (not complete)
- Do not fund the gap with assumed overtime that is absent from the time, cost and safety records. (not complete)
- Do not move manager delivery without naming the new owner, due-date effect and service consequence. (not complete)
- At the ramp checkpoint, compare planned and actual manager demand, new-member productive hours and unresolved escalations before the next hire or commitment. (not complete)
Limitations, evidence and next action
Use the calculation owner for the next step
- Employee and Contractor Mix Planner
Compare cost and productive capacity across a user-defined workforce mix without classifying workers
- Labour Budget Scenario Planner
Translate role headcount, active months, compensation, contractor and overtime assumptions into a period labour budget
- Hiring Break-even Planner
Test a hire against billable contribution
Questions and boundaries
- How many people should one manager supervise?
- This guide supplies no ratio. Role complexity, risk, competence, workflow, service level and local requirements differ; build the actual manager-time ledger.
- Is coordination time an inefficiency?
- Not automatically. Review whether it is required, duplicated or poorly designed, but keep necessary support and control work visible.
- Can the new member’s capacity cover the manager gap?
- Not by arithmetic alone. Timing, competence, the work displaced from the manager and the feasible use of new capacity must reconcile separately.
Sources and scope
- Provide information, training and supervision — UK Health and Safety Executive: Supports making training and supervision work visible, including for new recruits. UK-specific legal requirements are outside these global articles.
- Labour Budget Scenario methodology — Margin101: Defines the period labour-budget units and user-entered assumption boundary; it does not supply employment obligations or a hiring answer.