I only worked a few weeks at a part time job. Made only $403. Do I have to claim that on my tax return ?

[xmasbaby0]

If you have other W-2's and other income besides that, yes.

Every 2019 W-2 that you received must be reported on your 2019 tax return, even if they are for small amounts.  Remember that each one of those W-2’s has your Social Security number on it, and that income was reported to the IRS by the employer.  You do not want to get in trouble with the IRS for under-reporting your income.

ALL of your W-2’s must be entered on the SAME tax return.  After you enter the first one, you click Add Another W-2.

[NCperson]

but if that $403 is your ONLY job for the year and there were no federal or state withholdings, then no filing is required.  the only way to get the money back is the file a tax return.