If you are an Overseas Filipino Worker (OFW) employed in the United Kingdom with an expired visa, the short answer to the above-mentioned question is that “Yes, it is possible to stay in the country even after your visa expires.”
Of course, this is provided that you immediately do something about it before you hit your visa’s expiration date.
For instance, submitting your application to the Home Office before the appointed expiration will give your visa a “continuing” status. This means that your working visa will still be in place and will be honored even when your application is pending at the Home Office as you wait for the Secretary of State’s approval.
Under UK’s Immigration Act of 1971, Section 3C and 3D states that the status of an immigrant will remain unchanged while waiting for the decision of the Home Office. Applicants, however, are encouraged to immediately file their application in order to avoid becoming overstayers in the country. Besides, overstaying is considered a crime UK and violators are set to be punished which may lead to legal hassles or could lead to removal from the country.
Section 118 of the Nationality, Immigration and Asylum Act 2002 introduces an amendment to Section 3C of the Immigration Act 1971 which automatically extends the person’s leave to be “treated as continuing” as long as he or she has already submitted an application.
So technically, one can still work legally in the country even if his or her visa has already expired.
Despite that, the best thing to do is to consult with a legal professional in order to ensure that you are not violating any laws and rules that apply specifically to your case. Asking questions and seeking the help of a law adviser is always the most appropriate action to take.