I'm came to new work visa in qatar but I don't...

We would like to inform you that the Qatari Labor Law assures the cases to transfer the worker as below:
- A person who is linked to a fixed-term employment contract whose term has expired is eligible for NOC without the consent of the current sponsor.
- A person who is linked to an indefinite term contract and works for more than five years with the same employer is eligible for NOC without the consent of the current sponsor.
- A person who works for a fixed-term employment contract or an indefinite duration contract that has not completed the five-year period must obtain the consent of the employer in order to be eligible for the NOC for the transfer of bail.
Note that, all the above cases require the approval of the concerned authorities represented by the Ministry of Interior or the Ministry of Labor to transfer sponsorship.
Here is the text of the Qatari residence law, related to your query:
Article 21:
The employer, the Competent Authorities, and the Ministry of Labor and Social Affairs may agree to transfer the Foreign National laborer to another employer before the time limit in the contract has been reached or after five years of working for the employer if the contract did not specify a time period.
The Foreign National laborer may, with authorization from the Competent Authorities and the Ministry of Labor and Social Affairs, transfer to another employer in the event of the Recruiter’s death or dissolution of the body corporate for any reason
Article (22)
The Minister or his representative may authorize the temporary transfer of a Foreign National laborer to another employer in the event of a legal suit existing between the Foreign National and his Recruiter, on the condition that the Ministry of Labor and Social Affairs agrees, as regards the laborer who is subject to the referenced Labor Law.
The Minister or his representative may authorize the transfer of a Foreign National laborer who is not subject to the referenced Labor Law to another employer if proven that the Recruiter was abusive, or if required by the general welfare.
For the same reasons, with the consent of the Minister or his deputy, upon the application of the applicant for employment and the approval of the Ministry of Labor and Social Affairs, the arrival shall be transferred to another employer.