AFL-CIO top lobbyist William Samuel sent a letter to senators today urging them to vote in favor of the Employment Non-Discrimination Act.

The ENDA proposal would make it a civil rights offense to fire or otherwise discriminate against a person based on their "actual or perceived" sexual orientation or gender identity.

"The AFL-CIO believes it is wrong for any employer to discriminate against or fire a worker based on actual or perceived sexual orientation or gender identity. Discrimination in the workplace has no place in the United States," Samuel said the letter.

"We urge you to support S.815, the Employment Non-Discrimination Act of 2013 so that all workers can be afforded equal employment opportunities," he said.