In the Philippines, the right of a child to receive support from a parent working as an Overseas Filipino Worker (OFW) seafarer is protected by a robust framework of family, labor, and criminal laws. Because seafarers earn in foreign currency and operate under highly regulated contracts, the mechanisms for enforcing support are more specialized than those for land-based workers.

1. The Legal Basis for Support

Under the Family Code of the Philippines (Articles 194 to 208), parents have a joint and several obligation to support their children. This duty applies regardless of whether the child is legitimate (born within a valid marriage) or illegitimate (born outside of marriage).

What "Support" Encompasses

Support is not merely a cash allowance. Legally, it includes everything indispensable for:

Sustenance (Food and basic needs).
Dwelling (Housing or rent).
Clothing and Medical Attendance.
Education (Including schooling, trade training, or professional degrees, even beyond age 18 if the child is still studying).
Transportation.

2. The Seafarer’s Mandatory Allotment (The 80% Rule)

The most distinct feature of seafaring law is the Mandatory Allotment. Under the DMW (Department of Migrant Workers) Standard Employment Contract (SEC), a Filipino seafarer is required to execute an allotment of at least 80% of their basic monthly salary.

Designated Allottee: The seafarer must name an allottee in the Philippines to whom the 80% is remitted directly via a bank.
Direct Remittance: This ensures that the family receives the funds without having to wait for the seafarer to manually send money each month.
Solidary Liability: Under Republic Act No. 8042 (as amended by R.A. 10022), the local manning agency and the foreign shipowner are "jointly and severally" liable. This means if the seafarer fails to remit the allotment, the manning agency can be held legally responsible for the payment.

3. Proving the Right to Support (Filiation)

To claim support, the relationship between the seafarer and the child must be established:

For Legitimate Children: The Marriage Certificate of the parents and the Child’s Birth Certificate are sufficient.
For Illegitimate Children: The child must be "recognized." This is usually done through the father's signature on the Birth Certificate or a "Private Handwritten Instrument" (a letter or document signed by the father acknowledging paternity). If the father refuses to recognize the child, a Petition for Compulsory Recognition must be filed alongside the claim for support.

4. Legal Remedies for Non-Support

A. Administrative Remedy (DMW/SEnA)

Before going to court, a complainant can seek help from the Department of Migrant Workers (DMW). Through the Single Entry Approach (SEnA), a mediator assists in reaching an amicable settlement. If the seafarer or the agency fails to comply with the allotment rules, the DMW can impose administrative sanctions, including the blacklisting of the seafarer or the suspension of the agency's license.

B. Civil Action: Petition for Support

A formal Petition for Support can be filed in the Family Court where the child resides.

Support Pendente Lite: The court can issue a provisional order for immediate support while the case is still ongoing.
Garnishment: The court can issue a writ of garnishment, ordering the manning agency to deduct the support amount directly from the seafarer’s wages and remit it to the child/guardian.

C. Criminal Action: R.A. 9262 (VAWC)

The Anti-Violence Against Women and Their Children Act (R.A. 9262) classifies the willful "denial of financial support" as Economic Abuse.

Jurisprudence (Acharon v. People): Recent Supreme Court rulings clarify that for a seafarer to be convicted, there must be a "willful and conscious" intent to deny support to cause mental or emotional anguish.
Penalties: Violation can lead to imprisonment, fines, and the issuance of a Permanent Protection Order (PPO), which can mandate the automatic deduction of support from the seafarer's salary.

5. Determining the Amount of Support

There is no fixed "table" for child support in the Philippines. Instead, the court follows the Principle of Proportionality (Article 201, Family Code):

The Needs of the Recipient: The child’s actual expenses (tuition, milk, medical bills, etc.).
The Means of the Giver: The seafarer’s rank, basic salary, and total earnings.

While the 80% allotment is a contractual requirement for the family, a court order for child support specifically for one child might be a specific percentage of the father’s income, typically ranging from 20% to 50%, depending on the number of other dependents.

6. Challenges and Enforcement

Contract Termination: If a seafarer is "finished contract" and is currently on vacation (unemployed), the mandatory allotment stops. The legal obligation to support remains, but enforcement via the manning agency becomes difficult until the seafarer signs a new contract.
Change of Allottee: Seafarers sometimes change their allottee (e.g., from the mother of the child to a sibling or parent). While they have the right to choose their allottee, this cannot be used to circumvent a standing court order for child support.
Hold Departure Orders (HDO): In extreme cases of criminal non-support under R.A. 9262, the court can issue an HDO, preventing the seafarer from leaving the country to work until they settle their legal obligations.