If you apply for a work permit, you usually need to enclose the documents below. Special rules and forms may apply in the case of certain occupations.
Check the Swedish Migration Agency website.
You need:
If your family is accompanying you to Sweden, you can apply on their behalf in your own application.
If you use a paper form, or if the family will be applying at a later date, the family members are to use form Application for a permit for family members of employees, visiting researchers, athletes and self-employed persons 133011.
Check on the Swedish Migration Agency website which documents you need to attach for your family.
Swedish Migration Agency website
If you plan to work for a period longer than 3 months to start up or run your own business or become a part owner of a company, you must have a residence permit. As self-employed you are not allowed to take employment with any employer. For more information please visit the website of the Swedish Migration Agency.