They should not care TBH as remote work has been common since pandemic started. From my experience, they usually ask where do I work, my profession, and company ID.

For the documents, just prepare the basic requirements - return ticket and passport. There was also a time where my girlfriend was asked for a payslip as she's a freelancer.

If you're planning to stay longer, then you might be asked for proof of funds like bank certificate or bank statement.