I assume that the British director has been transferred to your branch on an "investment and management" visa whereas, in case of the legal staff member, although he or she is transferred to your branch as well, the visa for the staff member will be an "inter-company transfer" visa. In order to obtain this visa there are requirements to be fulfilled under the Immigration Law. Since the staff member is supposed to do legal work like drafting contracts having copyright clauses, such a job corresponds to that of a "Specialist in humanitarian or international services," which meets an activity requirement. Therefore, please make sure that the staff member has worked continuously in the headquarters for one year or more and will receive no less remuneration than a Japanese would receive for comparable work.

By the way, it depends on the amount of business for the staff, however, if the staff, having a one year inter-company transfer visa, stays in Japan for less than half a year for some reason, it might be difficult to renew the residential period of the visa. Under such circumstances it would become important to make future planning clear in submitting a statement of reason to the Immigration Office. There seems to be an alternative way to enter Japan i.e. on the 90 day short term visa. However, since activity on such a visa is limited to sightseeing, visiting relatives, participating in lectures or meetings and business contact etc, it would be advisable that while staying in Japan the short term visa is changed to an "inter-company transfer" visa by getting a certificate of authorization for residential qualifications from the Immigration Office.