The with pay term feels oddly specific and overly prescriptive. (If your society had UBI is this implying the employer still must pay you for holidays?)
I'd feel the minimum requirement to not threaten livelihood when a potentially coercive relationship exists is unpaid leave should be allowed (things like the FMLA). Though even that seems nuanced with contracting/business owners.
It is not intended to be applicable to any society imaginable, that would be impossibly broad.
On a practical note, I disagree with you that reducing someone's income if they need to stay home to stay healthy is non-coercive, in the world as it exists today.
If you are party to an agreement wherein you exchange labor for capital, how is it non-coercive to force someone to pay you for not holding up your end of the bargain?
Shorter answer: an agreement itself cannot be coercive if you voluntarily agreed to it, but you can be coerced into making that agreement. That's often the situation in America today.
Threatening a person's livelihood if they want to take a couple days off to go to the doctor is denying them "a standard of living adequate for [their] health and well-being". Additionally, if you force your workers to come to work sick, you also threaten everyone else's standard of healthy living by unnecessarily exposing them to a contagious disease.