If that was your only income and you were a Form W-2 employee, then no, you would not be required to file.
If you have other income or are filing a return (regardless of your income level), then yes, you must claim all income.
If the income was from self-employment or as an independent contractor (received cash, no taxes withheld, sometimes reported on Form 1099-MISC, but not required if under $600), then you need to file if your net income from the work is $400 or more (even if it's your only income) as self-employment taxes of 15.3% would be assessed.
