Explain job margins with traceable costs and overhead scenarios

Proposed inputs

1. Name

   Revenue and direct-cost copies

   Owner

   Owner or bookkeeper

   Minimum scope

   One completed period, job identifiers, invoices, credits and business costs.

   Quality check

   Reconcile the scoped totals to source exports and flag mixed currencies or periods.

2. Name

   Job-level effort

   Owner

   Operations manager

   Minimum scope

   Aggregated hours by job and role with estimate/billed distinctions; omit employee identifiers where unnecessary.

   Quality check

   State missing periods and distinguish zero hours from unreported time.

3. Name

   Cost policy

   Owner

   Bookkeeper

   Minimum scope

   Approved loaded rates, overhead pool, allocation drivers and target definition.

   Quality check

   Document inclusions so payroll burdens or shared software cannot be counted twice.

Access and setup — proposed or unknown

Proposed minimum

1. Use sanitized exports in a separate analysis folder; retain source row references and a frozen input manifest.

2. Compute sums and scenario formulas deterministically in a spreadsheet or reviewed calculation routine.

Compatibility unknowns

1. Unknown: export consistency, job-ID quality, accounting policy suitability and host/runtime behavior.

External actions requiring approval

1. Access to financial systems, transmission of confidential records, posting entries, modifying rates or communicating commercial decisions.

Why use this

1. A client-level total can conceal an expensive delivery pattern, while missing time records can make a troublesome job look unusually profitable. Simply ranking margins may amplify those gaps.

2. The useful result is an inspectable bridge from records to a business discussion. It should show which conclusions survive reasonable allocation choices and which depend on uncertain assumptions.

Why an agent / simpler alternative

Useful judgment

Match inconsistent job labels, identify missing evidence and explain plausible drivers without claiming that correlation proves a cause.

Simpler alternative

Use an approved job-costing report or a spreadsheet with established allocation formulas when exports already share reliable identifiers.

Unsuitable when

The result would be used to judge individual workers, determine pay, make tax filings or change customer terms automatically.

Expected deliverable and review checks

Proposed artifact

A job bridge with revenue, matched cost, unallocated items, pre/post-allocation results, scenario deltas and evidence-linked questions.

Critical checks

1. Scoped revenue and costs reconcile, including credits; unmatched items remain visible instead of disappearing.

2. Incomplete jobs cannot outrank complete jobs as though their margins were equally reliable.

3. Alternative allocation drivers use the same total cost pool, and rank changes are displayed.

4. A suspected cause cites supporting and missing evidence; no worker assessment or client action follows from the report.

Missing output evidence

No accounting reconciliation, owner acceptance or realized margin improvement was observed.

First check — proposed, unexecuted

Status

proposed_unexecuted

Synthetic fixture

Three fictional jobs include a shared subcontractor invoice, a credit against an earlier bill, one missing time period and a fixed overhead pool. Two approved allocation drivers produce different rankings.

Acceptance checks

1. The shared invoice is counted once and the credit remains linked to the correct period treatment.

2. The incomplete job is clearly separated from comparable results.

3. The total overhead pool is conserved in both scenarios and the ranking reversal is visible; no price or personnel action is proposed as automatic.

Stop conditions

1. Costs cannot be reconciled, the owner cannot approve assumptions or individual performance assessment becomes the objective.

Failure signals and proposed responses

1. Signal

   One cost row maps to several jobs at full value.

   Why it matters

   Double-counting creates artificial losses.

   Proposed response

   Require allocation fractions that sum to one, or leave the item unallocated pending review.

2. Signal

   A high-margin job has almost no recorded time.

   Why it matters

   Missing effort may be mistaken for operational excellence.

   Proposed response

   Mark the calculation incomplete and request evidence before comparing it with fully recorded work.

3. Signal

   A client's ranking reverses under a reasonable overhead driver.

   Why it matters

   The recommendation is policy-sensitive rather than a settled business fact.

   Proposed response

   Show both scenarios and ask the owner to choose a defensible allocation policy.

Effort and cost — unknown

Setup work

1. Clean job identifiers and agree the period, currency and cost policy.

Ongoing review

1. Reconcile new exports, investigate missing effort and revisit assumptions when the operating model changes.

Unknowns

1. Unknown: data-cleaning effort, model expense, bookkeeper time and usefulness of the resulting hypotheses.

Limits

1. This is an operational review draft. It does not establish causal truth, accounting compliance, fair employee performance or realized savings.