LANSING, Mich. (AP) — Eight Michigan companies have earned perfect scores for having inclusive, non-discrimination policies for lesbian, gay, bisexual and transgender workers.

The businesses are Dow Chemical, Dykema Gossett, Ford Motor, General Motors, Herman Miller, Kellogg, Steelcase and Whirlpool. They are among 407 companies across the U.S. to get the highest ranking.

The rankings were released this week by the Human Rights Campaign, a national LGBT advocacy group. The survey focused on non-discrimination policies, employment benefits, demonstrated accountability around LGBT diversity and inclusion and other categories.

Fair Michigan, a group pursuing a state constitutional amendment to ban discrimination based on sexual orientation, is applauding the companies but says there are still too many Michigan businesses without inclusive policies.