Their largest contract is only extended through its first option until Feb 2020. There's rumors that NASA won't be picking up Jacobs again for the 2nd (and last option), if they do decide to extend it. I suspect that Lockheed, Boeing, or Leidos will most likely win. At that point say goodbye to Jacob's. If that happends, there are usually provisions which prevent employees currently working active projects from being layed off, and instead will vouch to keep at least 90% of the workforce (with critical projects given priority first). So will layoffs coming next year? Most likely not. You can probably guarantee a small workforce reduction in 2020 though.
Good post by @VTJaJMC-4esi.