I believe it depends on the length of the TOWOP. A month is not a long time but if you take a year off then you most likely would be taken out of CASS. So I believe at a certain time period you would have to be taken out of CASS. Getting back in the system is as easy as a few hours. When I was furloughed I was immediately taken out of the system. But, a furlough is different than a TOWOP....