What Job Costing Means
Job costing is simple in principle. For every job, you record what you planned to spend, what you have actually spent and what you have invoiced. The difference tells you whether the job is making money, and where it is going wrong if it is not.
The hard part is not the maths. It is getting the costs recorded against the right job, at the time they happen.
The Costs to Track on Every Job
Keep the categories simple enough that your crews and office will actually use them. These cover most contractors:
- Labour: hours per person per job, at a real cost rate that includes visa, housing, transport and benefits, not just basic salary.
- Materials: purchases and stock issued to the job, including the small items bought on the way to site.
- Subcontractors: every subcontract and its payments, against the job it belongs to.
- Equipment and transport: hire, fuel and vehicle time where it is significant.
- Overheads: a fair share of office and management cost, so a job that looks profitable on site is not loss-making overall.
Variations, Retention and VAT
Three things catch UAE contractors out. Variations: extra work done on a verbal instruction and never priced or approved, so the cost lands on the job with no income against it. Retention: a percentage held back from each payment until completion or the end of the defects period, which can tie up a large share of the profit for a long time.
VAT: costs and invoices should be tracked net of VAT for job costing, with VAT handled separately in your accounts. Mixing gross and net figures is one of the most common reasons job reports do not add up.
See It While the Job Is Running
A job cost report that arrives a month after handover is a post-mortem. The value is in seeing a job drift while there is still time to act: hours running over budget, materials ordered twice, a variation not yet approved.
That only works if timesheets, purchase orders and job cards are recorded against the job as they happen, ideally on a phone at site rather than on paper collected at the end of the week.
Start Simple
You do not need a perfect system on day one. Start with labour and materials on every job, compare them to the quote, and review the running jobs once a week. Add subcontractors, equipment and overheads once the habit is in place.