Text: Care must be taken to distinguish between regular overtime and irregular overtime or occasional overtime (or compensatory time in lieu of overtime, where allowed) in order for the agency to properly document and calculate an employee's overtime pay entitlements under 5 U.S.C.
Entailment: You have to distinguish between regular and irregular and occasional overtime to document it appropriately.
Contradiction: You don't have to distinguish between regular and irregular and occasional overtime to document it appropriately.