I am from Asia and currently a grad student in USA. Every year I used to take vacation for 3 weeks to 4 weeks between December and January to visit my parents in Asia. As a student it is not a problem as my adviser at school has been fine with my vacation plan. However, I am going to finish my grad studies and going to join a big company (CA, USA) within a couple of months. According to the company's policy, every employee can get 3 weeks "accrued" vacation days per year (monthly 1.5 days). I am going to join the company in August.01.2013. I am planning to take a vacation of 3 weeks from Dec. 15. 2013 to visit my parents. However, by December.15.2013, I would get only one week accrued vacation days. Therefore I would like to discuss this with my future manager. The company already provided the details of my future manager. What are the things I should be careful while discussing my vacation plan with my future manager? Does it create any bad impression on me?