Concerning and it feels like if they wanna take something from you then kick you out. Something does not feel right.. also they’ll make a condition in the offer letter that they have the right to kick you off for no reason and with out explaining why they can do that.. so poor way to mention that in offer letter. So if you are new and still on visitor visa then you work for them for a while then if they kick you off it’ll be a big problem for you,