Q3 Fiscal 2023 Earnings Supplement

1 2 Compensation: Rigorous Approach Five Guiding Principles Emphasize variable, performance-based compensation to ensure that pay and performance are closely aligned Rigorous metric selection and goal-setting process to support ADP's financial, transformation, client satisfaction and ESG objectives 3 Pay competitively to attract and retain executives critical to our long-term success 4 Commitment to high standards of corporate governance and best practices Thoughtful design to minimize excessive risk-taking 5 and to ensure high integrity Compensation Governance Ensures Alignment with Principles Robust Clawback Policy applicable to cash and equity incentives Stock Ownership Guidelines for CEO (6x) & NEOs (3x) No option repricing Target pay levels generally benchmarked to median, with variation based on tenure and experience Regular peer group analysis (peer group refined for FY'22 and FY'18 to enhance alignment with ADP strategy) Double-trigger change-in-control severance and equity vesting provisions Limited perquisites Anti-Hedging and Pledging Policy No tax-gross ups No dividends on unearned performance stock Copyright 2023 ADP, Inc. 21 ADP

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