Don't know about KAL but I have been an expat in two major carriers and it was written that when visiting the office one was expected to be properly dressed, smart casual and that T shirts, shorts and flip flops etc. etc. were not acceptable. Not saying it is right but if that is what the paymaster wants then, for the sake of avoiding any hassle, why not just do it? It is not as though one goes to the office out of uniform that often, is it? Much easier to make visits coincide with a trip and thereby keep valuable days off for yourself. Just my 2d.