For example, over at Center for American Progress they have summarized some interesting statistics about LGBT employment discrimination:
If the Employment Non-Discrimination Act (ENDA) were to pass Congress and be signed into law, it would prohibit employment non-discrimination on the basis of sexual orientation and gender identity in every state in the country, under federal law.
Otherwise, it may be years (or even decades!) before openly LGBT people can be out at work without fearing losing their job based on a characteristic which is irrelevant to job performance.
Hat/tip to LGBT Think Progress.