WROTE: Sorry a contract is a two-way deal. <SNIP>
If you look at government payscales, they are very simple. They do not talk about pay per week. It's pay PER YEAR. That pretty much guarantees your total at the end of the year. My brother worked at an AIR FORCE installation and was subject to the shutdown years ago. He got time off. I worked at a similar installation but I worked for DLA and we worked on a different 2-week schedule (he got paid on one Friday and I got paid the next). I got no time off since the shutdown was settled in a week.
Ultimately, he got paid for that week off. We were pissed that we didn't get the paid vacation.