There are many reasons why it is important for all employees to understand the core business of their company, even though the specific reasons might vary with the specific role of the employee.
The first reason is safety. If you are working in a building with laboratories, you need to be familiar with a wide range of safety and emergency protocols, even if you never need to walk into a laboratory room. Having laboratory experience means greater familiarity with safety protocols.
Next, if you have any responsibilities related to budgeting, human resources, accounting or other administrative task, it helps to understand the basic terms and procedures of the business. Having some relevant educational background enables you to communicate with your colleagues and customers better and understand the key issues being discussed in meetings.