Ours is also yearly. However, as a contractor, you know you cannot bill for hours you do not work. Period. So, because of the shutdown, I am not allowed on the property and I am forbidden from accessing Federal assets (such as Citrix servers to remotely-work).
I suppose I could work an extra hour every day upon return, and make the missed money up in that fashion.
But if it goes on too long, I will be reporting to a new, private sector job.
That’s very strange the shutdown would affect an already funded contract. Perhaps you are paid by contingency? Are you a consultant? My understanding is consultants are paid with general operating funds. They may want to preserve those in this case. Or perhaps they cannot provide facility support?
Best of luck to you. If I were you I’d start working another job immediately as the old one will eventually return and there’d be a choice.