This document provides information on business travel and short-term assignments in several European countries, including visa and work permit requirements. It notes that while some business activities can be conducted without formal permission, work authorizations and residency permits remain important issues. The document also outlines long-term assignment options through the EU Blue Card program, which allows highly skilled non-EU nationals to work and reside in European countries. Key requirements for the Blue Card include higher education credentials, a job offer of at least one year, and minimum salary thresholds that vary by country.