https://global.temple.edu/isss/faculty-staff-and-researchers/international-employees/h-1b-applicants/240-day-rule-eligibility-continue-employment-while-extension-still-pending
An H-1B alien for whom the employer has filed a timely application for an extension of H-1B stay can continue employment for the same employer while the request for extension of stay is pending with USCIS, for a period of up to 240 days beyond the expiration of the prior period of authorized stay. 8 CFR 274a.12 (b) (20) To take advantage of this rule, the following conditions must be met: The ...