speaking lies

Speaking lies to get a job

Q: I have two questions and it is about Haraam or Gunaah and they are as follows:

1. I took admission in degree course with the help of some source though I did not clear the entrance exam and also based on that qualification I got job. Please tell me is it Haraam or Gunaah?

2. Also I worked in 7 companies. I lied in 5 interviews about my experience. Please tell me whether it is Haraam or Gunaah and if it is Haraam then does that mean everything I have earned and spent after that is Haraam? If it is Gunaah then one solution which came into my mind is that start learning or doing something from my parents money and try to earn a living from that. Is it possible that Allah will consider it as repentance.

Is it permissible to lie regarding one's salary

Q: I know that telling a lie is a sin in Islam. Islam has laid a great stress on speaking the truth. But some times people do not give us our rights unless we tell a lie. Example: A person is an employee of a company. His salary is 10000 and company tells him that he should work hard and after completion of some project company will raise his salary to 15000. But after completion of annual year/project company terminates him from job. Now person's work worth according to the market rate is 15000. But when this persons goes to next company for new job , if he tells them that his job was terminated and salary was 10000 (not 15000 which was his right now), new company will never take him on the reasonable salary (i.e. 15000). I want to ask that in this situation where we are unable to get our rights can we speak lie e.g. regarding salary to just get our right, not with the intention of harming any one?