If a man wants to come from Pakistan, what will be...

With regard to your brother's travel from Pakistan to the UAE, it needs a work or visit visa, bearing in mind that any person may be subjected to quarantine due to the Corona crisis for a period of 14 days and up to 21 days, as for the work visa
First stage - job offer letter
The offer letter and its annexes contain important details about the job, and both parties must sign these documents. Once you sign it, it becomes a valid contract.
The second stage - signing the contract
2.1) The business owner then submits the work approval, which gives the worker a permit to work in the UAE. This is subject to the employer's share of the workers.
2.2) If the assigned quota is approved, the public relations employee of the employer will attend and present the work contract. An employment contract is a document signed by the employer and the worker, through which the worker commits to work for the employer under his management, in return for a fee paid by the employer. Once the employment contract is signed, the job offer is replaced by this contract, and it must be submitted to the Ministry of Labor within fourteen days.
Third stage - the worker obtains a work permit.
3.1) If the worker is outside the UAE: The procedures begin by obtaining a work permit for expatriates from the Ministry of Labor, valid for two months from the date of its issuance, then the work contract must be signed (based on the job offer) and submitted to the Ministry of Labor within 14 days of the worker’s arrival To the Emirates.
Fourth stage - completion of the latest formalities (work visa)
The sponsoring company will then arrange the procedures for:
· Medical Examination,
· Obtaining a resident identity card (Emirates Card),
· Business card,
· The work residence permit is stamped on his passport, and these procedures must take place within a period of 60 days.