The big concern that I have for an economy without growth is that it becomes a zero sum game. Collaboration is a strong method of keeping the peace, without growth there seems a reduced incentive for collaboration.
I found: https://fred.stlouisfed.org/series/MEHOINUSA672N If anybody has better data (and I care about normal people and poor, and do not worry that the rich get richer)
If not all the "labor" inputs are eaten up by society-wide subsistence, some value will continue to accumulate, somewhere. To the degree that owners allow the workers to retain any of their "surplus value of labor," everybody's lot will continually improve.