I do not believe he can sponsor her. As they do not have a marriage certificate, they would not have the appropriate paperwork.
Also getting a job once she is there, is not a realistic option.
Depending on the type of Visa she enters the country on, any work undertaken , if she could find any, would be illegal.
She really needs to make enquiries at the Omani Embassy to get the correct information, and look at this with both eyes wide open.
Not everyone can sponsor a Maid in Oman. This might be of interest.....
Times of Oman ...September 20th, 2014
Muscat: A managerial level expatriate working in any of the top level private sector organisations in Oman can bring domestic help from abroad.
Apart from the designation, the other criteria is that an expatriate should have a salary of at least OMR700 if he or she wants to bring a female domestic help and a salary of OMR1,500 to bring a male domestic help, according to the Ministry of Manpower.
The ministry has said that an expatriate should be either a chief executive, general manager, president of a university, or principal of a college apart from a director, advisor, investor or a doctor specialising in various areas.
He or she must be a specialist in any area, lawyer, an engineer in the international or 'mumtaz' category or lecturers in private educational institutions.
The expatriate has to be an employee of the company which comes under international or 'mumtaz' category
To get permission or a licence to bring a domestic help, one should give a letter of assurance from the employer confirming the details of the monthly salary and should be held responsible if details provided by the applicant are found to be untrue.
Those who come under the definition of the domestic worker category are maids, personal drivers and nannies.
The applicant is also required to prove that his family is in Oman. One applicant can't apply for more than one domestic worker, according to the ministry.
However, these facilities would not come under the policy of Omanisation in the company, but it would be taken into account if the company was following the policy, said the ministry.
According to the rule, If there was a requirement for a personal driver, the car would have to be in the name of the expatriate.
A licence and labour card would cost OMR141 for a period of two years for a domestic worker. For a cook, one has to pay OMR201.
However, if a domestic worker leaves the country within 90 days of his entering the country, one can get another licence after paying OMR1 only.
However, this does not apply in the case of transfer of sponsorship or if somebody absconds.
From what I have heard, all the major hotels will organize diving for you. If you are looking at staying at the Oman Dive Centre, do not expect too much. It has seen better days, and the latest reviews regarding food ,and service , are not very favorable.
Muscat Daily.....April 23,2014
The Ministry of Manpower (MoM) has recently rejected several applications by employers for new work visas for women, but the reasons behind the restrictions are not clear to employers and prospective expatriate employees.
Sources in MoM told Muscat Daily that it was an internal issue and the restrictions are temporary and meant to regularise the sultanate's labour system. “The ban is in place, but is temporary - just to regularise and to put the whole system in place as far as the job market is concerned. However, the ban is not for all professions,” an MoM official said, without giving further details.
Meanwhile, employers say they do not have a clear picture. “We applied for labour clearance for women staff three months ago, but did not get it despite repeated attempts. We were told to hire men. There are no clear answers and the decision has not even been announced,” a human resources official of a retail chain said.
“Surprisingly, visa applications of male employees are being cleared, but those for women aren't. Concerned officials in MoM only say that they do not know the reason behind the restrictions,” a public relations officer of a company said.
Working expatriate women wanting to switch jobs are finding it difficult to get new visas. “I left my previous job, and the company I was to join keeps telling me that there is no visa clearance for women as of now. I don't understand what is going on,” said an
MoM earlier this year had said that it aims to bring down the overall number of expatriates (not just workers) in the sultanate from 44 per cent to less than 33 per cent of the total population. “The target of bringing down the overall number of expatriates in the sultanate will be done in such a way that existing projects in the country are not affected,” another MoM official said.
According to MoM figures, the total number of workers – Omanis and expatriates - in the private sector till the end of 2013 was 1,776,583. Of these only 224,698 were Omanis while the rest were expatriates - 1,308,981 in the business category and 242,904 in the special services category.
Latest National Center for Statistics and Information figures show that there are currently 1,767,396 expatriates in the country - 1,448,816 men and 318,580 women.
As I said, a temporary Ban, check with the relevant authorities for clarification.
In April this year, the Ministry of Manpower imposed a temporary ban on all working Visa's for females. It is advisable to check with the Omani Embassy in your country for the latest, correct information.