What Is Work Order?
A work order is the primary document used to plan, assign, execute, and record a specific job in a field service or contracting business. It tells the crew what work needs to be done, where, and when. Throughout the job lifecycle, the work order captures labor hours, materials consumed, status changes, and field notes. When the job is complete, the work order data becomes the basis for the invoice.
Why It Matters to Contractors
Every completed job should leave behind a clear record. Work orders create that record. Without them, contractors lose track of what was done on a job, cannot accurately bill for labor and materials, and have no documentation if a client disputes the work. A work order also serves as the job brief for the crew, so there is no ambiguity about scope before they arrive on site.
How It Works
A work order is created when a new job is booked. It typically includes the client name and address, a description of the work, the assigned technician or crew, the scheduled date and time, materials or equipment needed, and any notes from the office. As the job progresses, the crew updates the work order with actual hours logged, materials used, and field notes. When the job closes, that data feeds directly into the client invoice.
An HVAC contractor receives a call for a no-heat service call. A work order is created with the client address, the problem description, and the assigned technician. The technician updates the work order on arrival: three hours of labor and one replacement inducer motor from the parts inventory. The completed work order is the basis for the invoice sent to the client that same day.
Work Order vs. Invoice
A work order is an internal document that authorizes and records the job. An invoice is an external document sent to the client requesting payment. The work order captures what happened; the invoice translates that into a billing document. Most contractor software generates an invoice directly from a completed work order so no data needs to be re-entered.
How Contractors Track This
Work order software centralizes the full lifecycle of each job in one place. The office creates and assigns work orders; technicians update them from the field; the system timestamps status changes and logs all labor and materials automatically. This creates an auditable record for every job without manual data entry at the end of the day.
Related Terms
Frequently Asked Questions
What is the difference between a work order and a job order?
They are the same thing. Different industries and different software platforms use different terminology. In field service and contracting, 'work order' is the most common term. Construction and manufacturing operations sometimes use 'job order.' Both refer to the document that authorizes and tracks a specific piece of work.
What should a work order include?
A complete work order includes the client name and address, a description of the work to be performed, the assigned technician or crew, the scheduled date and time, any materials or parts required, and space for the technician to log actual hours and materials used. Notes from the client or from prior visits are also useful to include so the technician arrives with full context.
Does a work order become an invoice?
In most contractor software, yes. When a work order is marked complete, the labor hours and materials logged on it are used to generate the client invoice. This eliminates double data entry and ensures the invoice reflects what was actually done rather than what was originally estimated.
Can a work order have multiple visits?
Yes. A work order can span multiple visits if the job requires more than one trip to complete. Each visit is logged against the same work order so all labor and materials are tracked under one job record. This is common for larger installations, multi-phase repairs, and warranty callbacks.