How do I resign properly without burning bridges?

Resignation is a relationship management moment, not just a legal act. BGB §622 regulates notice periods — in the first year of employment, 4 weeks to the 15th or end of month, then graduated thereafter. Practical rules: (1) Inform your direct supervisor in person first — never by email or through colleagues first. (2) Resign in writing (registered letter for proof). (3) No negative comments about the company — the industry is smaller than you think. (4) Handle the transition carefully. (5) Request a good employment reference (§109 GewO). LinkedIn data: 70% of German employees eventually return to an area that overlaps with their former employer — reputation counts.