Does one have the right to claim end-of-service benefits after leaving work for legitimate reasons?

If the work is lawful, you have the right to claim your end-of-service gratuity and any other employee rights. The reference for this is the contract concluded between the two parties. Both the employer and the employee must fulfill lawful contracts, in accordance with the Almighty’s saying: "O YOU who have believed, fulfill [all] contracts." And the employer's delay in fulfilling the worker's rights is a forbidden injustice, as the Prophet, peace and blessings be upon him, said: "The procrastination of the rich (in paying debts) is injustice."