May 17, 2018 Seasonal and Part-year Workers: Time for a “Paycheck Checkup” If you work a seasonal or part-year job, a “paycheck checkup” can help make sure your employer is withholding the right amount of tax from your paycheck for your situation. A “paycheck checkup” is important after changes from the Tax Cuts and Jobs Act. Taxpayers can use the Withholding Estimator on IRS.gov. It can help estimate income, credits, adjustments and deductions. If you work part of the year, it’s best to check early in your employment period so your withholding is the most accurate.