In my company, one has to apply for PL 15 days in advance. I applied for it 40 days before, and another employee also applied around the same time, about 20 days prior. However, my boss accepted his leave and not mine. When I asked why, he randomly said he approved one and rejected the other. On another occasion, he sanctioned another employee's leave, i.e., PL, which was applied for just 1 day before. I feel that he is biased. What remedy do I have? Please guide.