In the world of business, efficient invoicing is crucial for maintaining cash flow and ensuring timely payment for services rendered. A job invoice, also known as a work invoice or service invoice, is a document that outlines the details of services provided to a client or customer and requests payment for those services. A job invoice serves as an official record of the transaction and includes important information such as the date of service, a description of the work performed, the quantity or hours worked, and the total amount due.