I live in Las Vegas, Nevada and work for a construction company in the office which makes me deal with a lot of spanish speaking only workers. I was told by my last non spanish speaking manager that I am not allowed to speak spanish which I took offensively but ignored it and have not been told that since. Today a couple of workers came in that had a question about their time, I was speaking spanish to them since they don't know any other language. When they left my new non spanish speaking manager (which is the owners sister) called me to her office and told me that from now on I had to speak to them english. I said ok but how am I going to address all these workers when all they know is spanish, and I know Nevada Laws are mostly about employers just want to know if they are allowed to tell me I can not speak spanish in the workplace. Please advise.