Can My Sister’s Ex Get Custody Just Because She Filed for Child Support?

Hey everyone, thanks for taking the time to read this.

I’m hoping to get some advice or hear from anyone who’s been through something similar.

Seven months ago, my sister was awarded full legal and physical custody of her two sons. The father’s visitation was left open to mutual agreement, but he never showed up to court, so the order was pretty straightforward. He was properly served and just chose not to be there.

Now, my sister has filed for child support because he barely contributes—he’s given about $600 total in the last year and a half. As soon as he got the paperwork, he suddenly decided to take her back to court, trying to get 50/50 custody. He claims he only sees the kids every few weeks and isn’t allowed to make decisions about their schooling or medical care. But we have proof from co-parenting messages showing that he’s the one who cancels visits or chooses not to be around. There are also times when he admitted to being too drunk or busy with a date to see them.

Quick background on this guy… He’s never been able to hold a job for more than four months, and he was living in a halfway house for veterans with mental health issues. We think he got kicked out for drinking or drug use. Now he says he’s living in an Airbnb. Before that, he failed out of a sober living program, got sent back to Arizona to live with his parents, then got kicked out of there too. He’s bounced around garages and couches for the past year and only came back to this area last April.

His behavior is all over the place. He sends nasty, harassing messages at random hours, then deletes them. Because of this, my sister only communicates with him through a court-approved co-parenting app where messages can’t be erased. He’s also been sued by previous employers for stealing money, been removed from job sites for being mentally unfit, and gets into bar fights regularly.

When he does see the kids, he doesn’t ask about their lives. Instead, he grills them about their mom—where she was, who she was with, etc. He even asked her to bring him a beer to a visit at a public park (she ignored that and just got snacks for the kids). Since getting hit with child support, he’s been sending threatening messages like, “You have no idea what kind of mess you just started.”

My sister handles everything for the kids—medical, school, everything. She refused to give him their Social Security numbers because she suspected he’d try to claim them on his taxes. Despite everything, she doesn’t block his visits unless it’s documented that he’s unfit due to harassment or substance use (which has happened four times).

So, my main question: Does he actually have a chance at getting custody changed? Or is this just an empty threat because of child support? Since he defaulted on the original case, would the court even take him seriously now?

They have mediation scheduled for late March in LA County. If that fails, the judge will be E. Duarte. She has a lawyer representing her.

Thanks again for reading and for any advice you can share!

Not a lawyer, but I know that in California, the courts usually try to make sure both parents have access to their kids. That doesn’t mean they’ll hand him 50/50 custody, but they may push for some kind of structured visitation. Since she has a lawyer, she should really follow their advice. They’ll know the judge’s tendencies and what’s realistic here.

The reason he doesn’t have custody or decision-making rights is because he skipped court. He’d have to prove a big change in his life to have any chance at reopening the case.

I work in family law in California. Based on what you’ve described, he will probably get some level of visitation. The courts always try to keep both parents involved unless there’s clear proof of harm to the kids. Even if he’s been a mess in the past, they might set up a reunification plan to give him a path back into their lives.

Not a lawyer, but I’ve been through something similar as the non-custodial parent (dad). Based on what you wrote, I’d be surprised if he got anything close to 50/50. He doesn’t have a stable home, a steady job, or a history of responsible behavior. The court is going to want to see proof that he’s changed before making any big decisions. Your sister needs to stay focused and not give in to manipulation.

Wishing her the best with this!

Tell her to document EVERYTHING. Every call, message, missed visit, incident—write it down. If she hasn’t already, getting a lawyer is the best move. Custody cases can get messy fast, and having professional guidance is huge. I work as a legal assistant in California, and I’ve seen how unpredictable these cases can be.

Courts believe kids should have both parents in their lives, so if he wants to be involved now, they’ll likely give him a chance. Fighting it too hard could make her look bad. At the end of the day, she chose to have kids with him knowing his issues, so it’s not surprising that problems are coming up now.

@Jordy
She’s not trying to keep him from seeing the kids—she just wants a structured visitation schedule instead of this random, inconsistent arrangement. The real question is whether he has any actual chance of getting more custody just because he got hit with child support.

@Lyle
He’ll probably get some kind of set visitation schedule, which would be more than what he has now (since right now, it’s totally up to her). But for 50/50? That depends on what the lawyer says.

@Lyle
I never said she was blocking him. I just meant that going in and pushing to keep him out completely won’t look good in court. Family law doesn’t always follow strict rules—it’s all about what the judge thinks is best for the kids.

Honestly, if he’s a deadbeat, he’ll probably stay one. Courts can grant him rights, but they can’t force him to actually step up as a parent.

@Jordy
How does this answer the question at all?

Glenn said:
@Jordy
How does this answer the question at all?

It does answer it. He has a legal right to try for custody, even if he hasn’t been involved. The court doesn’t care if he was absent before—they only care about what’s happening now. Whether he actually follows through is another story.

@Jordy
He doesn’t have legal custody. He sees the kids only when she allows it, and he’s not even trying to be involved. She’s not fighting for full custody—she already has it. She just wants to know if him suddenly wanting custody after getting hit with child support is something the court will take seriously. Your comment doesn’t really address that.