When greeting people in business, follow the local's lead. In general, the junior person in a meeting must bow to show respect, as the senior partner may reciprocate respect by offering his or her hand to shake. If you do shake hands, shake with your right hand and grab the other person's right arm with your left hand to show respect. Despite these local traditions, many Koreans take great pride in adapting to foreign customs and may insist on following European etiquette. Allow them to take the lead and follow suite.
Dress
The traditional dress in South Korea is called hanbok (which simply means "Korean clothing") and has existed for hundreds, if not thousands of years. This clothing is very simple in style and design, but is often quite colorful. For women the top is generally a long-sleeved blouse called a jeogori, with a jacket and a large skirt called a chima. For men the top shirt is also called a jeogori, but men traditionally wore pants called baji, which are very loose-fitting. Historically, the color of a person's clothes indicated their social status as commoners generally wore white, but for special occasions numerous colors were worn.
Today the traditional clothing of South Korea is still popular for special occasions, but western-styled clothes are more common for everyday wear and among the younger generation they may wear exclusively western-styled clothes. As a visitor to South Korea, you can wear nearly anything, but dressing more conservatively is appreciated and in business, dress is somewhat formal and punctuality is demanded. Shorts and short-sleeved shirts are acceptable in South Korea since there is no particular religious rule that forbids them, but it is rare to see shorts in most situations and wearing them may lead to some odd looks, but no real offense. This conservative nature extends to the beaches, where nakedness and women going topless is restricted, even if you're only sunbathing face down.