Not "worker" but "society". These safety nets are created to ensure the future continuity of society through making everyone's future safer. A good example you list is maternity leave. Most of the developed countries already have bare minimum birth rates to hold their populations steady, and many would be in decline if not for immigration. This is a massive time bomb because our retirement systems are designed so that we have enough people providing for those who no longer provide for themselves. As this pool is depleted, societal order built on wealth will collapse. Japan has this problems in a very severe form due to their extreme xenophobia preventing immigration from plugging the short term loss accrued and as a result they're already struggling even though enough time hasn't lapsed for the problem to become even remotely bad. This is the issue of next twenty to thirty years and it's going to keep getting worse during this period.
So we have a choice: deprive the owner class of some income and give all mothers in the country a significant incentive to get children desperately needed to maintain the society, or award owner class with a bit more money, and make sure that it will be next to impossible to get children unless you're very safe financially and have society hang on the verge of a cliff in twenty years or so due to collapsing birth rate.
It's called "short term gain versus long term gain". You are advocating the short term gains and fully willing to throw the future under the bus for them. This is a very common way of thinking among those of the current owner class, as they believe that they and their capital will be allowed to leave the society when it starts to collapse and go to another healthy society to parasite off until its eventual collapse. And the circle will continue.
They are likely wrong, and forgetting the lessons of French Revolution and what happens to owner class alongside everyone else when society really does collapse in a large Western contry. While many of the owner class in the developing countries successfully dodged this bullet and just left for European countries and US after parasiting their own countries to the point of societal collapse, it's highly unlikely that US and European countries will allow for the same thing to happen to them. A far more likely outcome is the way of the guillotine and mob justice on those who remain alongside massive confiscation of property and a complete collapse of society to the point where there are no "healthy economies" to run to due to global impact of a collapse of a large Western country.