Residence Permit Renewal

Hi,

I am on a prolonged residence here and it is expiring this February. I had the prolonged residence because I am a representative of a company and not because I have a work permit. Another company is willing to hire me. My question is, do I need to obtain a work permit? Or can I renew my residence permit with an employment contract from the company, my expiring ID, lease contract, bank account and NRA certificate?