I'm sure it depends greatly on the exact situation. I worked for a company (Company A) where some deal was worked out with another company (Company B) where Co

I'm sure it depends greatly on the exact situation. I worked for a company (Company A) where some deal was worked out with another company (Company B) where Company B was free to hire all of Company A's employees and took over Company's A existing office lease and such but didn't outright buy Company A (they didn't want to own or continue working on the same projects, they just wanted all of Company A's employees to work on something new). Company B basically just hired all of Company A's employees for their existing salaries with no individual negotiation for raises or bonuses. Almost all of Company A stayed around to begin with because Company A had a lot of smart people who enjoyed working together, but within 6 months a lot of people (including myself) bounced from Company B for a whole host of reasons. All in all, for me the situation was neutral. Company A was basically dead in the water without Company B anyway, but all that really happened for me is it delayed my having to find a new job for a few months. After deciding to leave Company B I quickly found a new job with a good raise over what I was making so that's cool. Of course, YMMV, I'm sure every deal like this is very different.