Figures in a new Harris Poll show how the recognition of same-sex marriages in the US has led to significant changes in public attitudes.

67% of all Americans surveyed, regardless of their feelings of approval or disapproval, believe that marriage equality is “inevitable everywhere in the US”, according to the poll commissioned by Out & Equal Workplace Advocates.

More than a third (35%) of heterosexual adults consider themselves to be an ally of LGBT people, compared to a quarter (27%) who declared so two years ago.

The research also shows transgender Americans remain especially at risk of workplace discrimination, yet increased visibility can lead to more respect and acceptance.

Nearly 8 out of 10 (77%) of heterosexual adults agree that how an employee performs in their job should be the standard for judging an employee, not whether or not they are transgender, compared to 67% of heterosexual adults tested in 2007.

Nearly half (49%) of gay and lesbian adults surveyed would consider changing jobs if their employer required them to transfer to a state where same-sex marriages were not recognised, compared to just 30% last year.

Also, eight out of ten (79%) gay and lesbian adults would prefer a job with an employer in a state where same-sex marriages are recognised over an employer in a state that does not recognise marriage equality.