[hyperlz]

There's also Green Card PERM Salary data available on sites like http://visadoor.com.

H1B's typically have less years of experience compared to Green Card applications, even through both their titles might say Senior Software Engineer for example. If you are researching salaries, I would definitely look into PERM Salaries as well.

Glassdoor groups all the salaries reported for a title over the years in one bucket. Hence, I find the PERM and Labor data very helpful because you can see how salaries have changed over years.

Eg. http://visadoor.com/companies/facebook-inc

http://visadoor.com/h1b/index?company=Facebook%2C+Inc.&year=...

http://visadoor.com/greencards/index?company=Facebook%2C+Inc...