All of the following statistics are from the Movement Advancement Project.
In some states, employment non-discrimination laws and federal court rulings protect LGBT people from being fired, discriminated against, or not hired at all because of their sexual orientation. 26 states do not explicitly prohibit discrimination based on sexual orientation, but 11 of these states are, according to MAP, "in a federal circuit with a ruling that explicitly interprets existing federal prohibition on sex discrimination...to include discrimination based on sexual orientation." Here are the 15 states with no protection at all.