Is there Assamese people in Bhutan?

Assamese are in Assam , a Indian state near by Bhutan. Certainly there are few Assamese and Bengalis working in Bhutan. Since Bhutan is small country almost all the laboring is done by foreign workers. But this people are brought into Bhutan for certain period of time. After the term is over they go back to where they came from. This is not something new, Bhutan has been hiring/ paying to the foreign laborers as early as late 90s for Bhutan has short of man power. Many people from neighboring countries eye for opportunity to work in Bhutan.