Why Sex-at-Birth Bathroom Rules Don't Make Anyone Safer
Public bathrooms keep coming up in debates about gender diversity, and it's not hard to see why. They're private, we're already used to them being split by gender, and that combination makes them an easy place to raise fears about who belongs and who might pose a threat.
The debate in proposed or passed legislation usually comes down to one question: should bathroom access follow a person's gender identity, or their sex at birth? Supporters of these bathroom bills frame the sex--at-birth approach as a simple safety fix - if everyone uses the room matching their birth sex, women's spaces stay easier to protect.
The reality reveals something else. Sex-at-birth bathroom laws don't reduce safety incidents, and they don't make cisgender women safer - the evidence points the other way, while trans people and gender-nonconforming cisgender people absorb the harm.
The real difference between gender identity and sex-at-birth bathroom access
A lot of support for sex-at-birth rules rests on the idea that gender-identity access “lets men into women's bathrooms.” That's not what it does - it lets trans women use women's bathrooms and trans men use men's bathrooms. In Canada, that's been legally supported since the late 1990s, when access based on self-determined gender identity became the legal standard.
So the real question isn't about bathroom labels. It's whether keeping trans people out of the bathroom matching their gender identity actually makes anyone safer.
The evidence says it doesn't.
Do bathroom bills actually make anyone safer?
The Williams Institute at UCLA reviewed criminal incident reports - specifically assault, sex crimes, and voyeurism - in Massachusetts localities that had passed gender identity non-discrimination protections, compared with localities that hadn't. Incidents in washrooms, locker rooms, and changerooms turned out to be rare across the board, and passing those protections wasn't linked to any change in incidents. A follow-up review of national data found no rise in stranger violence tied to gender identity protections either. The threat these policies are built around simply hasn't materialized.
Taking safety seriously means following the evidence, not treating an entire group of people as suspects without cause.
The impossible bind sex-at-birth bathroom laws create for trans people
Under a sex-at-birth rule, a trans man is required to use the women's washroom - a room where his presence is far more likely to draw questions or a confrontation than to go unnoticed. Use the men's washroom instead, and he's the one breaking the rule. Trans women hit the same wall.
The Williams Institute's research shows just how sharp that gap is. When trans men used women's washrooms - matching their sex at birth - 10% were turned away, compared to 5% when they used men's washrooms, matching their gender identity. The pattern holds for trans women too: 7% were turned away from men's washrooms (their sex at birth), compared to 5% from women's washrooms (their gender identity).
Either way, there's no version of the rule that lets them just pee in peace. Follow the sex-at-birth requirement and risk being confronted or reported by the people around them. Use the washroom that matches their gender identity instead, and they're breaking the law and in some states risk imprisonment!
Bathroom bills put cisgender women at risk too
There's no reliable way to enforce a rule based on sex at birth without policing appearance - deciding who looks like they belong in a room and confronting anyone who doesn't. That kind of scrutiny doesn't stay confined to trans people. Because cisgender people vastly outnumber trans people, who make up less than 1% of the population, the people most often judged on their appearance and confronted end up being cisgender - in particular, cisgender women who are tall, muscular, wear "masculine" clothing, have short hair, or simply don't read as "feminine enough" to other people.
We've already seen this play out. One example is the case of Gerika Mudra, a cisgender teenager, who was followed into a restaurant bathroom stall by a staff member, accused of "being a man," and eventually pressured into showing she had breasts before she was allowed to leave.
Mudra wasn't challenged over anything she did. She was challenged because someone decided, at a glance, that she didn't “look like a woman.” A policy sold as protecting women ends up authorizing strangers to judge which women look feminine enough - and in Mudra's case, that meant a teenager being cornered by a stranger and coerced into exposing her body just to use a public bathroom. That's not protection, it's the exact harm these policies claim to prevent.
A better approach to bathroom safety
None of this really comes down to which washroom someone uses, rather it comes down to what actually gets treated as a safety issue. A feminine cisgender woman can behave in a way that makes the people around her unsafe, while someone who doesn't match a stranger's expectations might be doing nothing more than washing their hands - looks are never a reliable way to tell who's dangerous and who isn't.
What's actually worth paying attention to is behaviour: staring, photographing, blocking someone's way, touching without consent, threatening behaviour, name calling - these are all things people can identify and respond to, regardless of who is doing them or what they look like. "This person doesn't belong here" isn't a report of anything someone did - it's just an assumption based on how they look.
The washroom debate tends to get framed as a trade-off between cisgender women's safety and trans people's dignity, but the evidence doesn't really support that trade-off. Sex-at-birth rules don't protect the very women they claim to help, and they create unnecessary harm for transgender people and cisgender people alike. What the evidence points to instead is a simpler, sturdier principle - one Canada and many other countries have already known for decades: trust people to know who they are, and judge safety by what they actually do.
Download our FREE guide: Rethinking Safety in Washrooms
Bathroom Bill - Quick Answers
Do bathroom bills based on “biological sex” actually make women safer?
No. Researchers compared places in Massachusetts that had passed laws letting trans people use facilities matching their gender identity to places that hadn't - and found no increase in assault, sex crimes, or voyeurism either way. National data reviews found the same thing. The safety risk these laws are built around hasn't shown up in the evidence.
What happens to trans people under a "biological sex" bathroom law?
They get pushed into washrooms where they're more likely to be questioned or confronted, not less. Under sex-at-birth rules, 10% of trans men were turned away from women's washrooms and 7% of trans women were turned away from men's washrooms - roughly double the rate seen under gender-identity access. There's no version of the rule that lets them avoid conflict or use the bathroom in peace.
Are cisgender women affected by bathroom bills too?
Yes. Because there's no reliable way to check someone's sex at birth at a washroom door, enforcement comes down to appearance - and cisgender women who are tall, muscular, or don't read as conventionally feminine get caught up in that scrutiny too.
How does bathroom access work in Canada?
Access has been based on self-determined gender identity since the late 1990s - a person doesn't need surgery, hormones, or updated ID to use the washroom matching their gender identity. It's been the legal standard for over 30 years.
What actually makes shared spaces like bathrooms safer?
Focusing on behaviour, not appearance. Staring, photographing, blocking access, or touching someone without consent are identifiable actions that can be addressed directly. Deciding someone "doesn't look like they belong" is a guess, not an assessment of safety - and it's a guess that fails plenty of cisgender people too.