The Relevé 1 slip reports employment income and related information, including salaries, wages, taxable benefits, tips, and commissions. It also reports amounts deducted at source, including Québec Pension Plan (QPP) and Employment Insurance (EI) contributions, income tax, and union dues.
You typically receive a Relevé 1 slip if you worked in Québec during the tax year.
TurboTax autmatically transfers most of the amounts from your T4 slip to your Relevé 1 slip for you. Verify the amounts transferred and manully enter the amounts from your source slip that weren't transferred.