The Hajj that is given to someone in return for a service he offers or even as a gift from the society is valid and rewardable so long as this chance is given to all his colleagues and there is no choosing based on any form of discrimination. It is not a condition for the validity of Hajj that the expenses be paid from one’s own money. Hajj can be granted in return for a service or as a kind of gift.
Discussing this issue Dr. Nasr Farid Wasil, former Mufti of Egypt, states: Islam urges Muslims to try their best to draw nearer to Allah and cooperate with their Muslim brothers in all good actions. Almighty Allah says: (but help ye one another unto righteousness and pious duty. Help not one another unto sin and transgression.) (Al-Ma’idah 5:2)
Based on this, if the society or the organization voluntarily pay for the expenses of the persons who will accompany the pilgrim group and supervise them, this will be valid and acceptable. The one whose Hajj expenses are paid will be rewarded and there is nothing wrong with the validity of his Hajj.
The facility that is given by the organization to its employees to go to Hajj is really a good thing so long as the choice of those who go to Hajj is not based on any personal consideration or privileges.
Allah Almighty knows best.