After you file

Do I still have to amend my taxes by law?
I recieved my first w2 by the end of Jan 2019 and did my taxes...
At the begging of April 2019 I received a revised w2 with allocated tips (it was wrong)...
I plead my case with the accountant at my company and yes the revised w2 was again wrong.
I recieve a 3rd w2 yesterday...both revised w2s were given well after 30 days of becoming aware of their multiple faults.
Do I still have to amend my taxes by law or am i in the clear bc it was obviously the company's fault multiple times... they only knew and admitted fault bc I showed them... both revised w2s were given well after 30days of realization of their fault.
Thank you!