One of my friend is working as an HR recruiter in a small recruitment firm for past 1 year. He got a good opportunity in a IT company and he has been asked to join within 10days or they will offer to some other candidate .In his present company he has a 30 days of notice period and they are asking him serve N.P. otherwise they will not provide relieving and experience letter. The company from where he got an offer is ready to take him without relieving and experience letter. He having an offer letter and salary proof(copy of all cheques)from the present company. Please suggest whether he will have any problem in future if he joined the company without getting relieving and experience letter from Present company.