You can download the data in a Neo4j format here.
The data contains information about 11 032 employees, their hierarchical relationships and their 24 departments. As anybody who has worked in a company for more than 5 minutes know, hierarchical relationships are just one the many types of relationships that exist in a company.
With Linkurious, we can explore the Houston’s hierarchy. If I type the name of Houston’s mayor, Annise Parker, I can view her relationships: