Work Order
What is Work Order?
A work order is the document that authorizes and describes a specific job: who the customer is, the location, the scope of work to be done, the parts and labor expected, and the schedule. It is the instruction the crew works from and the record the invoice is built on, linking what was promised to what was performed. A work order typically moves through a lifecycle — created, assigned, in progress, completed — and captures what actually happened on site, including parts used and time spent. It is the operational backbone of a service job, distinct from the estimate that precedes it and the invoice that follows.
The work order is where a sale becomes a job. An estimate wins the work and an invoice collects for it, but in between the work order is what tells the technician exactly what to do, where, and with what — and what comes back as the record of what was actually done. Without it, scope lives in someone’s memory and the invoice becomes a negotiation.
A good work order does double duty. Forward, it carries the scope, parts, and schedule the crew needs — laid out on a standardized job form — to do the job right the first time. Backward, it captures reality: the hours spent, the materials used, anything found on site. That captured detail is what makes the invoice defensible and what feeds the numbers — utilization, job cost, the rate at which crews resolve jobs on the first visit — that tell you how the business is running.
When the job’s scope changes once work is underway, the disciplined move is to issue a formal change order against the work order rather than quietly altering it, so the agreed record and the billing stay aligned.