Recommendation letter for a short time collaboration I have started my 1 year postdoc in math three months ago, of course after 1 month the university was closed and I have to work at home, due to Corona Virus. Recently, I want to apply for another postdoc position in another country. One of the required documents is a letter of recommendation from current mentor. I do not know whether it is reasonable to ask a recommendation letter from my current mentor, because I have just worked with him for a short time. Does he give me a recommendation letter?
If your contract is only a year long, your mentor is likely expecting you to be applying for jobs very soon. I don't think they would be surprised; in fact, they should encourage you. I would not hesitate in asking for a reference.