Agreements (and payments) are made on a task-by-task basis with each having a fixed price. When a contract attorney agrees to perform a task, the law firm will pay a deposit up front, which is held in the law firm's account until the task is completed. After the deposit is received the contract attorney will be authorized to begin work. Payment is released upon completion of the task. Law firms can add additional tasks to a contract for the contract attorney's review and approval.