A Work Permit or contract is a mandatory requirement for a Work Visa processing at the respective Embassy. On arrival to the destination country, you will be given a Residency Permit that allows you to work for the employer within the specified duration. Once you have held your Residency Permit for 5 years, you will be entitled to Permanent Residency, which en-route you to Citizenship after another 5 years. A residency Permit holder with work privileges means you are contributing to the health Insurance and other Social Insurance schemes available in that country. You will be able to access health care and other benefits. You can also invite your family.