[ephennaCypota]

In Thailand ladyboys (or katoeys- but I think this term is considered offensive- can sombody verify this please) are for the most part accepted as normal members of society. Since they are considered to have been born into the wrong body, I don't think it is considered "crossdressing" as such.
While there are a number of ladyboys working in the sex industry, there are also a great many of them working in normal jobs and studying as university students. One can see many ladyboys working at the cosmetics counter at many department stores- Emporium for sure.
Perhaps the reason that Maipenrai99 didn't see and ladyboys in offices in Thailand is because the ones who are working in "normal" jobs look and dress like any other girl, in a lot of cases they don't "stick out". Actually some of them do stick out because they can actualy be more beautiful than girls who were born girls. I mean, who goes to the doctor and orders an average or below average face? Of course they are gonna make themselves as beautiful as the doctor can make them.