RichardJA – I’m incredulous that your country (NZ right?) doesn’t allow private groups to bar people based on gender or religion. Are the men’s clubs there forced by law to allow women? Is the Mormon Church there barred by law from excommunicating a member who claims Mormonism is a load of crap?
Anyone - I think the U.S. has it right on private groups. They can discriminate, and they can be sued. For example, a men’s group that conducts business will soon be forced to hand over its assets to the group of women who claim they were deprived of economic opportunity. Consequently, men and women, or gays and straights, or Catholics and Mormons can still enjoy the exclusive company of their own kind as long as they harm nothing more than the sensibility of others.
Here is the U.S. law: Title VII of the Civil Rights Act of 1964, as amended, prohibits discrimination ... on the basis of race, color, religion, sex or national origin. The law covers applicants to and employees of state and local governments, public or private educational institutions, and most private employers.
Sexual orientation could be added to the list, but then why not add every other non-job related differentiation, like hobbies and favorite ice cream? Where would it stop? I would change the law to “on the basis of anything unrelated to the job” and let the lawyers fight the profitable claims. It works that way now despite how the law reads.