Work Permit

If you are from an EU country you can engage in employment in Germany or become self-employed.
People from third countries are only permitted to work in Germany if their residence permit allows it. You can apply for appropriate permits at the  Foreigners' Registration Office.
 
Further information about  Residence permit

• Erwerbstätigkeit gestattet = Permitted to engage in employment
  You may work for an employer and/or become self-employed.
• Beschäftigung gestattet, selbständige Tätigkeit nicht gestattet = Permitted to engage in employment, not permitted to become self-employed  
  You may work for an employer but may not become self-employed.
• Erwerbstätigkeit nur mit Erlaubnis der Ausländerbehörde gestattet = Only permitted to engage in employment with a permit from the Foreigners' Registration Office  
  Apply for a work permit at the Foreigners' Registration Office if you have found a job. You may only start working once you have this.