Do I need to file if I made less than $100 on a W2

I forgot I received a W2 for my job that I left Jan 20, 2016. I found it after I already filed my taxes, which included the W2 for my current job.The W2 I forgot to include only made about $100 in wages. Do I need to amend  my returns and file this W2? I live and made these wages in CA.