TIES stands for 'Time, Inefficiency, Excess Work, and Staffing' which are all potential causes for overtime. Time is when there is not enough time in the day to complete the tasks assigned. Inefficiency is when tasks take longer than expected due to lack of organization or resources. Excess work is when more tasks are assigned than can be completed in the allotted time. Finally, staffing is when there are not enough people to complete the tasks assigned. All of these factors can lead to overtime.