Job applicant should forward cv to: [email protected] vacancy in Dubai UAE

I have an appointment letter that asked me to pay for working permit process instead the employer is suppose to cover all expenses for the hiring process.
I answered this matter below:

"
Expenses made/incurred by the employee related to job before commencement of duties or Expenses made during Travel Plans, Processing of Travel Particulars ETC will be substantiated with receipts and Employer will reimburse the Employee not later than Five (5) working days after submission of Employee's expense Report and Receipts as proofs of such Expenses. "

I just wonder why the biggest oil and Gas company who could pay 2 months of 25500 dirham in advance to new candidate before depart from home country but still asked the employee to pay during Travel Plans, Processing of Travel Particulars ETC.

I have worked more than 15 companies before and I never pay any single penny for hiring process.