If an absence qualifies for FMLA and the employer has enough information, the employer generally must designate it as FMLA leave. Having paid sick time does not ordinarily let an employee postpone using the statutory leave bank for a qualifying absence. [1]
Pay and job protection are different
FMLA generally supplies unpaid protected leave. Paid sick leave can run concurrently under the applicable substitution rules and employer policy. An employee can therefore receive sick pay while the same days reduce the available FMLA balance.
Not every sick day qualifies
A routine short illness does not automatically meet the serious-health-condition requirements. Eligibility, employer coverage, the medical circumstances, and notice requirements must be examined. Employees need not say “FMLA,” but must provide enough information to alert the employer to a potentially qualifying reason. [2]
For example, a documented hospitalization may trigger FMLA analysis even if the employee asks only to use accrued sick hours. A brief ordinary cold may present a different situation.
Ask for written designation information
Review the eligibility notice, certification request, designation notice, paid-leave policy, and leave accounting. Challenge inaccurate dates or classifications promptly and keep supporting medical documentation.
Review a late or disputed designation
If the employer learns the qualifying facts later or designates leave late, the regulations address retroactive designation and potential harm. Do not assume either that an administrative delay always preserves extra weeks or that every late designation is harmless. Identify when notice was provided, what information was available, what the employer communicated, and how the employee relied on it. A medical-certification dispute is also different from an accounting error in the number of hours charged. Ask the employer for the specific dates and method used. Where the absence never met the FMLA conditions, simply paying sick time does not transform it into statutory leave. [1] [2]
Workers’ compensation and disability-benefit absences involve additional coordination rules. See FMLA and workers' compensation and using FMLA for yourself and a family member before assuming separate pay sources create separate FMLA entitlements.
Primary sources
Sources checked: October 31, 2026.