Survey respondents listed "inability of the family to adjust" as the second most-cited reason (61 percent) for assignment failure, just two percentage points behind "changing business conditions" (63 percent). Even before a move, the importance of family cannot be underestimated: 76 percent of respondents rated "family or personal circumstances" as the top reason why employees turn down relocation assignments. Stress can also occur in "split family" situations when the assignee and family live in separate geographic locations during the assignment, with the employee traveling back and forth. The number of companies that said family members were always allowed to accompany an employee on long-term assignments is down 14 percentage points in just two years. "Increasingly, a family's happiness and ability to adjust are nearly as important to the success of a job relocation as the employee's own job performance," said Matt Spinolo, executive vice president of Cartus. "The rise in split families is a trend we are hearing more and more about as companies reel in costs and move employees to new locations that can pose challenges in terms of infrastructure or security." "As multinational corporations increase their assignments to challenging locations in areas such as Africa, China, the Middle East, Southeast Asia and the Indian Sub-Continent, we see more unaccompanied assignees or those who do not have young dependents, due to the lack of social amenities available there," said William Sheridan, president of the National Foreign Trade Council. Spinolo also pointed out that 50 percent of companies surveyed expect their mobility volume to increase during the next two years.