It's interesting to me that your employer isn't a privacy concern to you.

How much of the data about you in the Equifax breach do you think came from your employer? How much of your data that has been breached came from Wells Fargo--not because you bank there, but because your employer uses them to process direct deposits? And how many times has your employer themselves been breached to give out your name, date of birth, ssn, driver's licence #, passport, address, details about your dependants, etc.?

I'm curious why you assume that the data your employer has about you hasn't already made its way into the hand of "big companies that can make connections between data sets."