# Child-in-law > Child-in-law means the spouse or domestic partner of one's child. **Term:** Child-in-law **Last updated:** 2026-07-29 ## Definition ## What Child-in-law Means in a Contract A child-in-law is defined within a contract as the person who has married or entered a registered domestic partnership with the signatory's, employee's, or policyholder's child. The relationship is created by law or formal registration rather than by biological descent, which is why contracts often list it separately from terms like son or daughter. Where a document uses family status to determine eligibility for a benefit, a payment, or a legal right, the inclusion or exclusion of a child-in-law can materially change who qualifies. This term most commonly surfaces in clauses dealing with dependents, next of kin, or extended family, particularly in documents governing benefits, leave entitlements, or succession. Because the relationship depends on an underlying marriage or partnership, it is inherently conditional: if that marriage or partnership ends through divorce, dissolution, or annulment, the individual may cease to qualify as a child-in-law under the contract's own terms. ## How Child-in-law Is Defined or Measured Contracts typically define a child-in-law by reference to a formally recognized marriage or civil partnership involving the drafter's or beneficiary's child. Some agreements extend the definition to cohabiting partners of a child if the contract treats domestic partnerships as equivalent to marriage for its purposes, while others restrict it strictly to legally married spouses. The precise scope depends entirely on how broadly or narrowly the definitions section is written. Measurement issues often arise around timing and continuity. A contract may specify whether a child-in-law relationship must exist at a particular date, such as the date of an employee's death or the date a policy is issued, or whether it continues to apply after a separation but before a final divorce is recognized under the law governing the contract. Some agreements also address step-children-in-law or the children-in-law of a deceased child, which requires further clarity. - Whether the relationship must be current or can be historical - Whether domestic partners are treated the same as spouses - Whether the definition survives divorce, separation, or death ## Where Child-in-law Appears in Agreements The term frequently appears in employment policies governing bereavement or compassionate leave, where employers define which family relationships trigger paid time off. It also appears in