@Larry Starr thanks for the reply and those are good questions! Here is the background: I heard from one of my financial advisor friends that there are a lot of orphaned 401k's, so much that a bill called "Retirement Savings Lost and Found Act of 2020" was just introduced, which says 30% of employees have left their retirement accounts with previous employers. I'm a startup founder so I became interested in knowing more about this problem and whether this will impact me or any employer in general.
So when I say problem, I meant "will it be a burden for the employers if their former employees left behind their 401k's?" The burden can be financial burden (fees etc), administrative burden or any burden that I am not aware of. Or if most of the work is done by admin service/consultants, is it a problem for them?