Is the contract concluded between the employee and the company valid if the employee is not provided with a copy of it, and how can the employee guarantee his rights in this case?

For a contract to be valid, writing or documentation is not a condition; rather, it becomes valid with the presence of offer and acceptance, such as the association of offer with an obligating acceptance. So, if the offer and acceptance occur, and there is an agreement on the work and the wage, the lease contract is formed and becomes binding on both parties. As for documentation, whether by writing or witnessing, its benefit is to guarantee rights, prevent disputes, preserve assets, and remove doubt, not for the validity of the contract itself. Therefore, if the contract between the employee and their company is concluded through offer and acceptance, it is valid. The matter becomes even more significant if the responsible authority in the state stipulates that the employee be given a copy of the contract, which clearly serves an interest. If the employer's refusal to provide the employee with a copy of the contract results in injustice or the loss of a right, then the employer is sinful for that.