Within the next few months I will be working remotely (full time work from home) for my employer, as well as operating my small business on the side. Will I be able to deduct the home office expense if I operate both jobs out of the same office?

To clarify my reason for asking this question, I understand if I exclusively operated one, or the other, then the home office deduction would be applicable (I meet all other qualifications). But if I operate BOTH out of the SAME office, is it still deductible? Do I fail the "exclusivity" test? Do I have to set up two different areas for each one?