This is not strictly true. There may be a a possibility of getting approval anyhow if you have good savings records and can show bank statements etc from your previous country of residence i.e if you can show bank statements with regular income of an appropriate amount coming into your account. Additionally if you could get parental guarantors and whatever letters you can assuring your permanent employment status from your employees. If either of you is a professional i.e. medical, legal, accountancy, teaching etc it may help your chances. However it may still be a long shot!