The Hermann Corporation is a rival company to the Sigmund Corporation that uses technology to alter one's memories, granting them a "wish" they have never fulfilled.
On specific days of the year, the Sigmund Corporation refers all calls and assignments to the Hermann Corporation, as per contract, allowing employees of the Sigmund Corporation some much-needed time off. This contract also works the other way around, with the Hermann Corporation referring all assignments to the Sigmund Corporation on specific days (it is unknown what the Hermann Corps. does with this extra time though). This exchange possible either via mutual agreement between companies or as per regulation via a parent company.