Agree Expat.
The biggest issue for me is probably flexibility. Good quality childcare is all very well, but actually when my kids only have me, they need me more than if they had me and another parent imo. When they're older, it's also about being able to work from home, do flexible hourse, etc., without being made to feel like a pariah.
Every time I think of applying for a full time job or a job outside the home, one of my kids gets sick. If I were superstitious, I'd think someone up there was trying to tell me something. But that awful thing of having to ring in and tell your employer that you have to stay home, when in fact in most jobs, you shouldn't need to do that - you should be able to shift days around, or work from home, and no-one bat an eyelid.
More rights to flexibility and a proper work life balance would benefit all employees, but lone parents would disproportionately benefit. I don't see the government making any moves to encourage employers to make flexible working a reality, in the shape of tax incentives for companies who do.