>It goes to show that the common system of employment, in which we spend our time toward the purposes and meanings of others, tends to provide no purpose or meaning for ourselves.

Work certainly provides meaning, you'll notice this when you can't find work for a while, ie. involuntarily unemployed. Also, you have to find deeper meaning outside of work: church, social clubs, raising kids, taking care of elderly parents, volunteering, etc. Getting paid to do moral work is rarely a thing and somewhat defeats the purpose.