They are required to have excellent knowledge of English or Arabic and good knowledge of the other language.

UNESCO: Communication and Information

The medium of instruction being in Czech for most courses (certain courses are conducted in English), the beneficiaries of these fellowships are required to pursue a one-year preparatory Czech language course.

UNESCO: MEDIA SERVICES

The policy required Filipino-American employees to speak in English except when speaking to a patient with other language needs or during break time.

FORBES: English-Only Policies in the Workplace: Are They Legal? Are They Smart?