Hi, I signed an offer letter but not a contract! I...

We would like to inform you that according to the Qatar Labor Law of 2004, if the work offer is signed and you started the work without signing contract, then you can prove that by all means even the employer is violated the law, as the below article states:
Article (38)
If the work contract is not written, the worker may prove the work relationship, and the rights that have arisen for him, by all means of proof.
Article (51)
The worker may terminate the service contract before its expiry date if the contract is of a definite duration and without giving reasons for the termination if the contract is of an indefinite duration and retains his full right to obtain the end of service gratuity in the following cases:
1. If the employer commits a breach of his obligations under the service contract or the provisions of this law.
2. If the employer or his responsible manager commits a physical assault or immoral act upon the worker or any of his family member.
3. If the employer or his representative has misled the worker at the time of entering into the service contract as to the terms and conditions of the work.
4. If continuance with the work endangers the safety and health of the worker provided that the employer is aware of the danger and does not take the necessary steps to remove it.
Therefore, you can go to the Ministry of Labor and file a complaint with details and leave the work and you will keep your labor rights according to the ministry.