How can I know the marital status that my husband declared in his OWWA membership?
There are two ways to get the information you need:
Through your husband. You will have to ask him about the status he declared.
Through the website. I doubt they will give you the info in plain sight, but that doesn't mean you can't try. Use the following link to reach the contact page: http://www.owwa.gov.ph/?q=content/contact-us