Every year if you are lucky. They basically give you the cost of living only and again if you are lucky. They tend to be cheap when it comes to salary. No bonuses. Usually the increases range between 1.5 percent to 2 percent, but that's pretty much it. If you stay long term you quickly get behind the average rate of pay for your role so to get better money you have to look outside the company for another job paying more.
Answered - Postdoctoral Scholar/Graduate Research Assistant (Former Employee) - Pasadena, CA
Answered - Assistant (Former Employee) - Pasadena, CA