In the absence of a union contract, promotions and transfers can be done on the whim (at the discretion) of the employer, they do not have to do it fairly or according to seniority. Transferring someone who has the language skills needed, regardless of time on the job or performance, could logically be considered a good move for the business, though it may seem unfair to those who have been there longer and didn't get the desired job or raise or whatever. Reverse discrimination is even more difficult to establish, when it remotely might be, than direct discrimination on the basis of being a protected EEOC category. We all really, have an age, a sex, a nationality or something that might fall into an EEOC category.