Good afternoon I would have some question regards...

We would like to inform you that if your inquiry relates to the company changing your visa from a visit to work to be valid until December 13 and the visa is not stamped or provide medical insurance, the following information:
The signing of the employment contract is not something that the worker can terminate the employment contract as the UAE labor law does not grant the worker the right to terminate the employment contract during the trial period, which should not exceed six months and if the employment contract is of limited duration and is still in force, the employment contract cannot be terminated until after the end of its term
If the employment contract is of unlimited duration, the employment contract may not be terminated unless the worker notifies the employer at least thirty days of termination of his desire to terminate the employment contract and if the worker terminates the employment contract illegally, the worker must pay compensation to the employer not exceeding a maximum of one and a half months' salary in addition to the employer's right to apply for a ban against the worker and prevent him from working in the UAE for one year.
Finally,
If your employer refrains from stamping your visa or providing medical insurance, you can file a complaint against him to the Ministry of Human Resources and Emiratisation.
Here is the text of the UAE Labor Law regarding your inquiry:
Article 37
The worker may be appointed under probation for a period not exceeding six months and the employer may dispense with the services of the worker during this period without warning and without end of service reward. The worker may not be appointed. Under experience more than once with one employer, and if the worker successfully passed the period of the experiment and continued to work, the period of service shall be calculated.
Article (116):
Where a contract is revoked by the worker for reasons other than those stipulated in Article (121), he shall be required to compensate the employer for any damage the latter sustains as a result, provided that the amount of compensation shall not exceed half a month wage for three months or for the remaining period of the contract, whichever is shorter, unless otherwise stipulated in the contract.
Article (117):
1. Either the employer or the worker may terminate an indefinite term contract for a valid reason at any time following its conclusion, by giving the other party a notice in writing at least 30 days prior to termination.
2. For the daily-paid workers, the notice period shall be as follows:
• One week: if the worker has been employed for more than six months but less than one year.
• Two weeks: if the worker has been employed for not less than one year.
One month: if the worker has been employed for not less than five years.