A young woman is asking about working in a casino
Question

                I am a young woman, 23 years old, and I have found a job in a casino. What is the ruling on working in a casino? Casinos are widespread in our country; in every major hotel there is a casino where some employees work for high salaries. 

The work in these places varies: 

1 – Reception: This is the one who takes a photocopy of the gambler’s ID and makes bookings for them and handles their accounts.  

2 – Then there are others who learn how to gamble and then play with the customers on the company’s account, and there are those who supervise them. And there are people who work in the bar and serve food and drinks and alcohol to the customers. And there are security guards, cleaners, and public relations staff who attract customers. 

I want to know what is the ruling on these people’s work? Please note the economic circumstances in which we are living and the huge numbers of young men and women who work there, and the high salaries they are paid.
Praise be to Allah.Firstly: 
No Muslim 
    doubts that Allaah has forbidden alcohol and gambling, and He has described 
    them as major sins. Allaah says (interpretation of the meaning): 
“O you 
    who believe! Intoxicants (all kinds of alcoholic drinks), and gambling, and 
    Al‑Ansaab (stone altars for sacrifices to idols etc) and Al‑Azlaam (arrows 
    for seeking luck or decision) are an abomination of Shaytaan’s (Satan’s) 
    handiwork. So avoid (strictly all) that (abomination) in order that you may 
    be successful.

    91. Shaytaan (Satan) wants only to excite enmity and hatred between you with 
    intoxicants (alcoholic drinks) and gambling, and hinder you from the 
    remembrance of Allaah and from As‑Salaah (the prayer). So, will you not then 
    abstain?”

    [al-Maa’idah 5:90-91]
Secondly: 
When Allaah 
    forbids a thing, He also forbids helping others to do it in any way 
    whatsoever. Allaah says (interpretation of the meaning): 
“Help you 
    one another in Al‑Birr and At‑Taqwa (virtue, righteousness and piety); but 
    do not help one another in sin and transgression. And fear Allaah. Verily, 
    Allaah is Severe in punishment”

    [al-Maa’idah 5:2]
The basic 
    principle according to the scholars of sharee’ah is that the means are 
    subject to the same rulings as the ends. Everything that leads to something 
    haraam is also haraam. 
Thirdly: 
It is not 
    permissible for a Muslim to be present in a place where Allaah is disobeyed, 
    unless that is because of necessity or he is forced to do that. He is 
    obliged to denounce this evil and change it and remove it; if he cannot then 
    he must leave that place. The basic principle is that the Muslim should shun 
    sinful places and keep away from them, and not help the people there to 
    disobey Allaah. Staying in such places goes against the command to the 
    Muslim to change evil wherever he sees it, and it goes against the command 
    to shun places of evil and sin. 
Allaah says 
    (interpretation of the meaning): 
“And it 
    has already been revealed to you in the Book (this Qur’aan) that when you 
    hear the Verses of Allaah being denied and mocked at, then sit not with 
    them, until they engage in a talk other than that; (but if you stayed with 
    them) certainly in that case you would be like them.”
[al-Nisa’ 
    4:140]
al-Qurtubi 
    (may Allaah have mercy on him)said: “then sit not with them, until they 
    engage in a talk other than that” means, other than kufr. “(but if 
    you stayed with them) certainly in that case you would be like them” 
    this indicates that it is obligatory to avoid keeping company with sinners 
    if they openly commit evil, because the one who does not avoid them is 
    approving of their actions, and approving of kufr is kufr. Allaah says: “(but 
    if you stayed with them) certainly in that case you would be like them” 
    so everyone who sits in a sinful gathering and does not denounce them, 
    shares the burden of sin equally with them. 
He should 
    denounce them if they speak of sin and commit sin. If he is not able to 
    denounce them then he should get up and leave, so that he will not be one of 
    those mentioned in this verse.  
It was 
    narrated that ‘Umar ibn ‘Abd al-‘Azeez (may Allaah be pleased with him) 
    caught some people who were drinking alcohol, and it was said to him that 
    one of those who were present was fasting. He had him beaten in order to 
    discipline him, and he recited this verse: “certainly in that case you 
    would be like them” i.e., approving of sin is also sin. 
End quote 
    from Tafseer al-Qurtubi (5/418) 
Shaykh Ibn 
    Baaz (may Allaah have mercy on him) said: 
Denouncing 
    sin in one's heart is obligatory for every one, which means hating and 
    despising the evil, and separating from those who commit sin if one is 
    unable to denounce it with one's hand or tongue (i.e., by taking action or 
    speaking out). 
Al-Durar 
    al-Saniyyah fi’l-Ajwabah al-Najdiyyah (16/142) 
Moreover 
    there is the fear that the one who works in these places will become weak in 
    faith, and may lose all sense of gheerah (protective jealousy), and the 
    shaytaan may tempt him to sin. Allaah says (interpretation of the meaning): 
“O you 
    who believe! Follow not the footsteps of Shaytaan (Satan). And whosoever 
    follows the footsteps of Shaytaan (Satan), then, verily, he commands 
    Al‑Fahshaa’ [i.e. to commit indecency (illegal sexual intercourse)], and 
    Al‑Munkar [disbelief and polytheism (i.e. to do evil and wicked deeds; and 
    to speak or to do what is forbidden in Islam)]”
[al-Noor 
    24:21]
Fourthly: 
Based on the 
    above, it is not permissible for a Muslim to work in these casinos, because 
    then he will helping others to disobey Allaah and approving of sin, or he 
    will come under the ruling of one who approves of sin. That includes all 
    those who work in these casinos, it includes those who play with the 
    customers, or teach them, guard them, serve them, receive them and other 
    jobs. The Muslim should not be deceived by the salary he gets, for on the 
    Day of Resurrection he will be asked about his wealth, from where he 
    acquired it and on what he spent it. 
The most 
    precious thing that a Muslim has is his religious commitment, so he must 
    guard it and not be one of those who sold their religion for a trifling 
    price of worldly gain which will soon pass away. 
This is the 
    ruling: it is haraam to work in these places; and in your case, it is even 
    more haraam. Do you know why? 
Because you 
    are a woman, and you are less able to put up with things and resist than a 
    man is, and the evildoers’ hopes of corrupting you will be stronger. How can 
    a girl of your age be sure that she will be safe if she is among those 
    deviants in those casinos with their alcohol, drunkenness and desires? 
We hope that 
    you will submit to sharee’ah and reason, and you will not go anywhere near 
    those places, so as to protect yourself and the most precious thing that you 
    possess. 
Remember the 
    words of Allaah (interpretation of the meaning):
“And 
    whosoever fears Allaah and keeps his duty to Him, He will make a way for him 
    to get out (from every difficulty).
3. And He 
    will provide him from (sources) he never could imagine. And whosoever puts 
    his trust in Allaah, then He will suffice him. Verily, Allaah will 
    accomplish his purpose. Indeed Allaah has set a measure for all things”

    [al-Talaaq 65:2-3]
And remember 
    the words of the Prophet  (peace and blessings of Allaah be upon him): 
    “Whoever gives up something for the sake of Allaah, Allaah will compensate 
    him with something better than it.” Classed as saheeh by al-Albaani. Do not 
    forget that no soul will die until it has received its provision in full, 
    sooner or later.

    We ask Allaah to help you to forego this job willingly, and to compensate 
    you with something better than it, and to bestow His bounty upon you, and to 
    make us and you independent of means through halaal ways so that we have no 
    need of that which is haraam. 
And Allaah 
    knows best.