It depends. If your earnings were all W-2 wages, then you are not required to file a federal return. But, if there were any taxes (federal or state) taken out of your paychecks, then you may want to file to see get the taxes withheld refunded to you.
If your earnings were reported to you on a 1099-MISC form, then you will be required to file a tax return as self-employment taxes are due on all self-employment amounts $400 or more.
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