Overseas Filipino Workers (OFWs) can apply for Pag-IBIG membership online through the Pag-IBIG Fund's website. You will need to fill out the Membership Registration Form and submit the required documents, such as your valid ID and proof of employment abroad. Once registered, you can start making contributions to build your savings for future benefits. It's a good idea to check the official Pag-IBIG site for detailed guidelines and to ensure you meet all requirements. If you're uncertain, consider reaching out to the nearest Philippine embassy or consulate for assistance.