Generic word for any kind of unit inside the company

I'm translating a document template, to be filled out later for specific purposes. It has a table in the beginning which indicates who exactly produced a particular document. In the first line of the table, we have

Подразделение: наименование

"Подразделение" is literally "subdivision", which means "a company's unit of any size and type". Thus, the first line says "Subdivision: Name".

The company has units called "such-and-such department", "such-and-such division", ".. unit", ".. site", ".. laboratory" - and I need a catch-all term for this table.

Will Business unit suit the purpose? Can we call, say, a laboratory is "a business unit"?

I felt strange using it because a laboratory does not do any "business".

Yes, business unit would be suitable. The definition according to www.businessdictionary.com is

A logical element or segment of a company (such as accounting, production, marketing) representing a specific business function, and a definite place on the organizational chart, under the domain of a manager. Also called department, division, or a functional area.

The research lab at Kodak was referred to as a business unit when I worked there, so I don't think there is a problem using it for a laboratory that is part of a company. You could use "department" if you think "business unit" might be confusing.