In an emergency, information is a survival tool, and unclear communication has made many crises worse than they needed to be. The principles that hold up everywhere are simple: say what is known, say what is unknown, say what people should do, and repeat it through multiple channels. Vague or contradictory messages push people toward rumour, which spreads faster than any official bulletin.
Language is the piece expats feel most sharply. If alerts only go out in the local language, non speakers can miss evacuation orders or health warnings entirely. It is worth finding out how your city sends emergency alerts and whether an English or multilingual option exists, and subscribing to your embassy's notification service if one is available.
Day to day, the same logic applies at work. Safety instructions that are short, visual, and available in the languages staff actually speak get followed. Dense policy documents mostly get signed and forgotten.