For multinational and conglomerates, workflow processing may span across several companies and/or departments/locations.
The Workflow Add-On allows you to define where workflow records should be processed - at the Home of the workflow (the company to which the employee belongs) or otherwise.
System Configurations>>Workflow>>Workflow Definition>>[expand record]>>Workflow Stages
Process at Home of Workflow: Check Yes to process the workflow records in the Company to which the employee belongs.