Hi I julie john just want to know about labour...

We would like to inform you that there shall be a written condition in the worker's contract relating to non-employment with the competitor company in order the employer may sue the worker when he works for the competitor company.

The worker shall comply with this condition even if the previous company terminated the employment contract. If that condition is not written in the employment contract, the employer may not sue the worker.
But if you mean that after the end of the work contract, it is possible to work for the same company, and if it is not signed
A new work contract, this means that the work contract has been transformed into an indefinite employment contract

Here is the text of the UAE Labor Law relating to your inquiry:

Article (127)

Where the work assigned to a worker allows him to become acquainted with the employer's clients or to have access to his business secrets, the employer may require him to undertake not to compete with him or participate in any enterprise competing with his own, after the termination of his contract. For such an undertaking to be valid, the worker must be at least 21 Gregorian years of age at the time the agreement is concluded, and the agreement must be confined, in terms of time, place and the nature of the business, to the extent necessary to safeguard the employer's legitimate interests.