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How to practice proper business etiquette in japan
Be timely!
Japanese companies run on tight schedules which are strictly adhered to. Call one to two hours beforehand to say you are on your way. If you will be late, call as far in advance as possible; giving less than a one hour notice is bad form.
The same goes for the ending of meetings. If it is scheduled to end by 4 o'clock, try your best to finish on time, leaving enough time to say goodbye.