A regulation issued by the Department of Homeland Security has taken effect, ending the practice of automatically extending work permits. The change means that certain immigrants living in the United States may see gaps in their employment authorization. The rule specifies which renewal applications are subject to the new requirement. It also outlines exemptions that allow some cases to continue without interruption. The policy replaces a previous system that granted automatic extensions under the prior administration. Commentators note that the shift could disrupt the job continuity of affected workers. The regulation aims to tighten oversight of employment eligibility.