Any part time employment will earn you a generous EITC, with two kids as much as 40% of your wages. That assumes your pension income isn't so high as to wipe out the EITC.
The earned income credit is first calculated (actually looked up in a table) on your earned income then it is calculated on your total income (AGI). You get the lesser of the two calculated EIC numbers. See the 2017 EIC table at:
<a rel="nofollow" target="_blank" href="
https://apps.irs.gov/app/vita/content/globalmedia/earned_income_credit_table_1040i.pdf">https://apps...>
