However you must filter those applying for Visa.Saudi Arabia and the UAE will not hurt those innocents workers just because there is a disagreement on certain issues with the government of Pakistan. This is morally wrong and will not happen. Those people have families to feed and parents to look after.
Ask them to provide Zakat deduction summary if they are Muslims, or if they are poor Muslims than they must submit sect. declaration form, attested by Pakistan foreign office and NADRA.
Declaration of sect. is norm. in Pakistan, if you happen to be a shia it open doors in Pakistan for you, state exempt you from Zakat deductions, which are mandatory in Pakistan for all Muslims.