Lifeguards
In order to better protect the general public, lifeguards are required to wear uniforms in both countries. There is a difference between the two in terms of both their usefulness and their formality. This North Korean woman looks more like a flight attendant than a lifeguard, at least based on the image that has been provided.
The South Korean lifeguard, in contrast to their American counterparts, wears uniforms that are better suited to the tasks they are responsible for. In addition to that, he is carrying a first aid kit with him at all times. It is possible that both are competent; nonetheless, one appears to be better prepared than the other.