if you are exiting Qatar then the business visit visa is automatically expired as it is an one entry visa, so there will be no need for an NOC in that case, if your original sponsor is willing to give you NOC then you can change the visit visa to work visa under the new company here itself by paying 500QR to the immigration office, your new company PRO or mandoop will take care of it.
if you are exiting Qatar then the business visit visa is automatically expired as it is an one entry visa, so there will be no need for an NOC in that case, if your original sponsor is willing to give you NOC then you can change the visit visa to work visa under the new company here itself by paying 500QR to the immigration office, your new company PRO or mandoop will take care of it.