I've been working for 4 years didn't go on...

We would like to inform you that the UAE labor law includes all the employees without distinguish between Muslim or Christian.
Each worker shall be entitled to leave with full pay on the following occasions: 1
. New Year's Day (Higra): one day. 2
. New Year's Day (Gregorian): one day. 3
. Lesser Bairam: two days. 4
. Greater Bairam and Eve: three days. 5
. Birthday of Prophet Mohammed: one day. 6
. Al Isra and Al Mi’raj: one day; 7
. National Day: one day.
Article 75 A worker shall, for each year of service, be entitled to an annual leave of not less than: 1. Two days a month, where the worker’s period of service is more than six months but less than one year. 2. 30 days a year, where the worker’s period of service is more than one year. Where a worker's service is terminated, he shall be entitled to annual leave in respect of fractions of the last year.
Article 76 The employer may fix the date of commencement of annual leave and, if necessary, divide such leave into not more than two periods. However, the leave division provision shall not apply to leaves of child workers.
Article 77
Holidays stipulated by Law or by agreement, and any other days of leave on account of sickness, falling within an annual leave shall be considered as an integral part thereof.
Article 82
A worker who contracts an illness that is not a work-related injury shall report his illness within a maximum of two days; the employer shall thereupon take the necessary measures to have him medically examined immediately for the purpose of verifying his illness.
Article 83
1 worker shall not be entitled to any paid sick leave during the probationary period.
2. A worker who contracts illness after completing three months, following the probationary period, in the continuous service of an employer shall be entitled to a sick leave not exceeding 90 days, successive or otherwise, in respect of each year of service, to be calculated as follows.
• The first 15 days: with full pay.
• The next 30 days: with half pay.
• Any subsequent periods: without pay.
Article 84
No wage shall be payable for sick leave if the illness is the direct result of the worker's misconduct (such as consumption of alcohol or narcotic drugs).
Article 85
An employer may terminate the services of a worker who fails to report back to work after exhausting all sick leaves provided for in Articles 82, 83 and 84 hereof. In this case the worker shall be entitled to severance pay as stipulated in this Law.
For the insurance, you have appeal against that to the employer. If they refused then you can file a complaint in the labor office.