Dear sir my visa is expire1yrar. My company is...

you may ask to transfer the sponsorship to another company without the approval of the current sponsor.
Here is the text of the UAE Minister of Labor Decision No. 766 of 2015, which is still in effect so far:
Article 1:
Third: In all types of contracts (fixed or unlimited period):
As an exception to the cases stipulated in paragraphs first and second of this article, a new work permit may be granted to a worker if one of the following cases is present:
1- If the employer is proven to have violated his obligations legally or by agreement (for example, but not limited to: the case of non-payment of wages for a period of more than sixty days).
2- The case of the complaint filed by the worker against the facility in which he works due to his failure to be attached to work to close that establishment, and in this case a report from the inspection sector at the ministry proving that the facility has not been practicing its activity for a period of more than two months, provided that the worker has visited the ministry within two months from Crash date.
3- The case of the labor complaint referred by the Ministry to the court, in which case a final judgment in favor of the worker is required including his entitlement to a wage of at least two months, or compensation for unfair dismissal or termination of the contract specified before its end, or any other rights that the employer did not give to the worker on his own accord Without a reason approved by law, or depriving him of the end of service gratuity.
In all the cases stipulated in this article, the worker must fulfill the remaining conditions required - in accordance with the applicable legal systems - to grant him a new work permit.