What Is Job Costing?
Job costing (also called job order costing) is a cost accounting method that accumulates all costs, materials, labor, and overhead, for a specific, identifiable unit of work: a production job, a project, a contract, or a customer order.
Unlike process costing (which averages costs across identical units), job costing tracks costs at the individual job level. This makes it essential for businesses where each job or project is unique and profitability varies significantly from one job to the next.
Who Uses Job Costing?
Job costing is the standard cost accounting method for:
- Contract manufacturers, tracking costs by production run or customer order
- Aerospace and defense, job-level cost tracking for government contracts
- Construction and engineering, project-level cost management
- Professional services, tracking billable hours and expenses per client
- Custom fabrication, steel, plastics, specialty components
The Three Components of Job Cost
Every job cost record accumulates three types of costs:
Direct Materials
Raw materials, components, and supplies consumed in producing the specific job. Tracked via material requisition forms or BOM (bill of materials) pulls.
Direct Labor
The wages of workers directly engaged in producing the job. Tracked via time sheets, work orders, or production system records.
Manufacturing Overhead
Indirect costs allocated to the job based on a predetermined overhead rate, machine time, facility costs, utilities, indirect labor. See overhead absorption.
Total Job Cost = Direct Materials + Direct Labor + Applied Overhead
Job Costing vs. Standard Costing
Job costing and standard costing are often used together. Standard costing sets the expected cost for each component; job costing tracks the actual cost incurred. The difference between the two is the cost variance.
| Job Costing | Standard Costing | |
|---|---|---|
| Focus | Actual costs per job | Expected costs per unit |
| Purpose | Job profitability | Cost control benchmarks |
| Timing | Tracks costs as incurred | Set in advance |
| Output | Job cost report | Variance analysis |
Why Job Costing Is Hard in Practice
Job costing sounds straightforward but creates significant operational challenges:
Data lives in multiple systems. Materials data is in the ERP or inventory system. Labor data is in a time-tracking or payroll system. Overhead allocation requires data from facilities and production scheduling. Connecting these systems accurately, and in a timely manner, is the core challenge.
Overhead allocation is imprecise. Choosing the right overhead allocation base (direct labor hours, machine hours, units produced) and keeping the rate current requires ongoing cost accounting attention that many mid-market companies lack the staff for.
Actuals arrive late. By the time all costs are captured for a job, weeks may have passed. Finance leaders often don’t know whether a job was profitable until long after it shipped.
Systems don’t communicate. A VP of Finance at an aerospace company described it plainly: “The operations side is a black hole. I could still be off $2-3M on profitability.” That gap is almost always a job costing data problem.
Job Costing Reports
A complete job cost report typically includes:
- Job number and description
- Estimated vs. actual costs (materials, labor, overhead)
- Job status (in progress, complete, invoiced)
- Gross margin by job
- Variance from estimate
How Go Fig Improves Job Costing Visibility
Go Fig connects production systems, ERPs, and time-tracking tools to surface job cost data in real time, without waiting for month-end reconciliation. Finance teams get drill-down visibility from the P&L all the way down to individual job cost components, enabling faster identification of margin compression and more accurate job estimates going forward.