There are lots of reasons why people don't have kids which don't have anything to do with their expense.
I can think of several people I know, who (I think) would have made perfectly fine parents, but probably (or even definitely) never will. Waiting for "Mr/Ms Right", who they never manage to find - he or she always seems to be already taken or chasing somebody else or being chased by more appealing options. In other cultures/societies (and even previous versions of their own), at some point they would have settled for "Mr/Ms Good Enough"–but, they've absorbed a culture which discourages (even criticises) doing that. Plus, many children of divorced parents are hesitant to have kids with someone less than ideal, because they worry it will lead to their own kids going through what they did. I doubt changes to working conditions can do anything to address those kinds of issues.
Replacement TFR is 2.1 for low mortality countries; in 2021, the OECD average was 1.58. If we talk about that shortfall, 0.52, how much of that shortfall is due to expense/workplace/career/education-related reasons, and how much due to other reasons? (I don't know.) If it is mostly due to expense/workplace/career/education-related reasons, targeting those factors may make a big difference; if it is mostly due to other reasons, targeting those factors might not make much difference at all.
Well, my thinking here is that increasing available time by reducing the number of hours people have to work to live is going to be a net benefit to individuals like you’ve mentioned in your first paragraph too. People are more likely to go out and do things and find each other if the majority of their energy and waking lives aren’t tied up with work.
It might make some difference – however, if a person's dating expectations are fundamentally out of sync with what's realistically available to them, having more time to spend on meeting new people might not change the ultimate outcome. What we don't know, is what's the proportion of "probably would have found partner if they'd had more time to look for one" versus "unlikely to have found anybody that would satisfy them no matter how much time they had to look". If it is mostly the former, your proposals might make a big difference; if it is mostly the latter, your proposals are unlikely to change much
I can think of several people I know, who (I think) would have made perfectly fine parents, but probably (or even definitely) never will. Waiting for "Mr/Ms Right", who they never manage to find - he or she always seems to be already taken or chasing somebody else or being chased by more appealing options. In other cultures/societies (and even previous versions of their own), at some point they would have settled for "Mr/Ms Good Enough"–but, they've absorbed a culture which discourages (even criticises) doing that. Plus, many children of divorced parents are hesitant to have kids with someone less than ideal, because they worry it will lead to their own kids going through what they did. I doubt changes to working conditions can do anything to address those kinds of issues.
Replacement TFR is 2.1 for low mortality countries; in 2021, the OECD average was 1.58. If we talk about that shortfall, 0.52, how much of that shortfall is due to expense/workplace/career/education-related reasons, and how much due to other reasons? (I don't know.) If it is mostly due to expense/workplace/career/education-related reasons, targeting those factors may make a big difference; if it is mostly due to other reasons, targeting those factors might not make much difference at all.