The phrase "separate policy" refers to a standalone set of rules or guidelines that are distinct from others. It means that something is being treated or controlled differently from other related things. Full definition
Put another way, why should the person that caused your injury benefit from the fact that you or your employer have been paying separate premiums for separate policies for so long? (jeffbrooketeam.com)
When there's multiple people embarking on the same trip, the process of purchasing separate policies for each individual can be time consuming and tedious. (visitorscoverage.com)
You can, however, buy separate policies for flood and earthquake damage. (mis-insurance.com)