Oswald was given a job in a radio factory in Minsk.
The Russians found him to be an absolute loon.
He did live there for years though, dating, getting married, and having a child, and made his own request to leave.
The Russians accepted him and treated him relatively well.
Oswald was a low level assembler, but was given a manager size apartment and salary. They wanted to use him for propaganda. His oversized salary was probably the only reason his wife married him.