Career website CareerCast tallied 9,800 company reviews generated by its users. It asked them to rate their happiness on a scale of one to five in eight different categories. Then it crunched the numbers and tallied the answers out to three decimal points. The categories:1. Person you work for
2. People you work with
3. Work setting
4. Support you get
5. Rewards you receive
6. Growth opportunities
7. Company culture
8. Way you work