The Center for Responsive Politics, a well-respected nonpartisan group that specializes in analyzing campaign data provided the following; Their numbers include contributions from employees and their immediate families.
Their analysis of the 2008 presidential campaign found that University of California employees were Obama's top donor, giving a collective $1.6 million. That system is run by the state of California, and hence is a public employer.
No. 2 was Goldman Sachs. Goldman employees gave Obama $994,795.
Obama's next biggest donors were the employees of Harvard University, Microsoft, Google, Citigroup, JPMorgan Chase, Time Warner, the law firm Sidley Austin, and Stanford University. View Obama's complete list and amounts here. Incidentally, Goldman Sachs ranked No.4 on John McCain's list of employee contributions, at $230,095. Moore said that Goldman Sachs is Obama's "No. 1 private contributor." The data shows that is correct. We rate his statement True.