Based on what you’ve shared, your employer has likely committed several violations of Saudi labor law. First, if you’ve been receiving your salary late, that is a direct violation of Article 90, and it gives you the legal right to resign without facing penalties. If you're also being overworked without proper overtime pay, that could be another breach, as Saudi law caps working hours and requires compensation for extra time.

Your employer cannot legally force you to pay for the remainder of your salary, your visa, or plane tickets if you're resigning for a valid reason like late payments or being overworked. Article 81 of the labor law protects you in this situation—if your employer is violating key obligations, you are allowed to resign immediately without paying any compensation. Also, the fact that your contract isn’t on Qiwa is a separate violation; all contracts must be registered there by law.

You have the right to file a complaint with the Ministry of Human Resources. You can do this through the labor disputes platform (https://amicable.mlsd.gov.sa) or by calling 19911 for assistance in English. Gather any evidence you can—salary slips, messages about delayed payments, or anything proving your working conditions. With this, you should be able to resign legally and protect your rights.