References to production come up all the time in Marxist writing.
Capitalism is a "mode of production". Social relations are rooted in "relations of production". Capitalist economies are repeatedly convulsed by "crises of overproduction". The ruling class rule because they control the "means of production". This emphasis on the centrality of production is sometimes characterised as "economic reductionism" because it is argued that the complexity of human life must be understood through a variety of different criteria which are beyond economic considerations.