Is it out of line to politely ask a prospective employer to make a hiring decision in a certain amount of time? Specifically, I'm applying for internships right now. I was just offered a job by my B choice and they would like me to accept or reject the offer by this weekend. My 'A' choice, in theory, is supposed to announce a decision 'soon'. Would it be proper to email my 'A' choice to mention that I have a deadline coming up and I would appreciate it if they could make a decision by the weekend? On a similar note, how frowned upon is it to un-accept and offer for an internship. i.e. I have an open application with NASA which would probably be preferable to my other options. If I'm offered that position, lets say in a couple of weeks, what are my options for decommitting from the original internship? I realize its not preferable to the employer, but does it happen? Are employers understanding of that sort of situation?