Thirty-one years ago, Ohio-based Armco Steel prepared to sell its Burns & McDonnell unit. But before a corporate buyer could step in, a group of employees put together financing and bought the engineering, architecture and construction firm.

Since then, Burns & McDonnell has been owned by its workers, and that ownership and the sense of sharing in the company’s future have helped the company make the Chronicle’s Top Workplaces list every year since the survey began seven years ago. This year, company came in at No. 5.

Read more: At Burns & McDonnell, employees feel like owners — because they are