How can companies ensure the long-term sustainability of language training programs in supporting employees with self-consciousness about their language skills in a multicultural workplace, and what strategies can they implement to continuously improve and adapt these programs over time?

Companies can ensure the long-term sustainability of language training programs by regularly assessing the effectiveness of the programs through feedback from employees and tracking their progress. They can also provide ongoing support and resources for employees to practice and improve their language skills, such as language exchange programs or cultural immersion experiences. To continuously improve and adapt these programs over time, companies can invest in professional development for language trainers, stay updated on the latest language learning techniques and technologies, and tailor the programs to meet the specific needs and goals of employees in a multicultural workplace.