USCIS final guidance relating to changes in job sites for H-1B employees (the "Simeio memo") is now in full effect. Employers who plan to move H-1B employees to a site outside the "area of intended employment" listed in their most recent H-1B petition must file an amended or new petition before the employee begins working at the new place of employment. "Area of intended employment" is the area within normal commuting distance of the work site where the H-1B worker is normally employed. Please note that these amended or new petitions cannot be filed prior to certification of a new Labor Conditions Application ("LCA") unless an appropriate LCA is in place. If possible, we recommend that employers include all known job sites in the initial petition in order to avoid the cost and delay involved in filing amended petitions.