Entering into a deeper relationship with someone (employer/employee, landlord/tenant, etc) you want to know everything about the other person. This is not because you are some nosy person - its because breaking that relationship means risking lawsuits or damage to your property or a whole eviction process which can take months to years... Its a dangerous thing to "trust" someone when they'll have that level of contro…
Both real examples from companies I have worked at.