To an employer, the employee's track record provides insight on the behavior they can expect from him.

Your track record is what you present. No one is asking for W2s or tax transcripts. There is no central repository you can call upon for employment history (besides the hot garbage that is Equifax's The Work Number; you have frozen your Work Number profile if your employer reports data to them, right?)

https://krebsonsecurity.com/2017/11/how-to-opt-out-of-equifa... (KrebsOnSecurity: How to Opt Out of Equifax Revealing Your Salary History)