Those trends include the changing demands of the growing number of millennial travelers, new technology as well as traveler safety, but in those areas, policy changes are lagging.

According to the research, one in four travel buyers say more than 40 percent of their traveling workforce is now made up of millennials. More than half of the buyers, 54 percent, say millennials tend to push the boundaries of corporate travel policy and 73 percent say millennials demand different, more consumer-like tools out of their company’s travel program.

However, only one in five travel buyers says they have changed their travel policy as per the increasing millennial workforce demand.