Thanks for the reply Stumpy! I've tried to find information regarding this online as well but couldn't find information. We've also called a woman in the police station in Vientiane to ask but she was also not very sure and said that is was probably ok... A lot of maybe's etc.... Asked a former manager of the company who told me I was 'safe' and no problems regarding to him. The best things might even be to drive to the border, go to Thailand and go back to Laos. When exiting Laos I will probably find out already, and otherwise while entering again....
Wonder if anyone else might have thoughts on this one as well...