Timeliness of completion of tasks for the modern enterprise is very important, and many of the practical application of workflows, including the application of a wide range of domestic and international open-source workflow, exist the problems of unequal distribution of tasks and tasks easy overtime. Paper presents a time-control model can be used in workflow engine. Through the task time measurement platform to measure the task time-consuming, and as a means of appropriate task distribution to avoid task timeouts. After the practical application of the model, the overtime rate decreased significantly, indicating that the model is not only effective, but also provides a reference for architecture design and practical application of enterprise-class workflow engine model.