What documentation must an Eligible Employer retain to substantiate eligibility to claim the tax credits?

Eligible Employers claiming the credits for qualified leave wages (and allocable qualified health plan expenses and the Eligible Employer’s share of Medicare taxes), must retain records and documentation related to and supporting each employee’s leave to substantiate the claim for the credits, and retain the Forms 941, Employer’s Quarterly Federal Tax Return, and 7200, Advance of Employer Credits Due To COVID-19, and any other applicable filings made to the IRS requesting the credit.