How can I get the release?

I am a Qualified Accountant with Degree in B.Sc.Business Administration (Finance) Special. In March 2005, I came to Qatar with an employment visa of a local Company as an Accountant. Due to practical difficulties prevailed on that company, within a month time; I managed to get the release by paying additional amount of money and joined with another local company, which is my present employer.

Presently I am working for this company more than Three years. As my current employer is paying a very low salary when compare to Market rate, and not increase the salary even after two years of services, I decided to seek a better offer in Qatar itself, beliving that I could easily get the release since I have been recruited locally.

Recently I was offered an Employment offer in a well reputed listed company in Doha with a very attractive remuneration package, which is four times higher than the present salary package. When I requested release from my present employer, he refused without any valid reason.

Due following reasons, can I get legal advice for release?
• As I am not directly been recruited by my present employer,(Locally Hired)
• There is no fixed contract between me and employer except the Letter of Appointment,
• I have been working for my present employer for more than three years,
• I have been under paid, when compare to Market rate.

I was trying to put forward my issues to Human Rights Authorities in Qatar, but unfortunately I could not receive any feed back from such Government bodies in Qatar.

Higherly appreciate yor responce.

Kind Regards,

AH