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express these stipulations? And how can I guard
against complicated arrangements that are covertly
exploitive? >>
You mean, how do you prevent, as Nozick put it, capitalsit acts among consenting adults? The answer, I guess, is that if under socialism someone wants to work as a wage laborer for another, it is not exploitative for him to do so in the sense that exploitation is something objectionable, because (a) the distribution of property is just, (b) he is not forced to work for anyone else in virtue of beinf propertyless, and (c) the relations at work are not dominatimng and alienating, unless the wage laborer wants them to be in a sort of S&Mish, consensual way. So far as a bilateral relationship goes, wage labor under socialsim is OK.
The problem is that is these relationships become widespread, they will uindermine the just distribution of property, collective ownership, etc. Variosu replies are possible: (1) there is no more need to worry than we have to worry that S&M will displace normal sexual relations; so who cares; (2) high taxes might remove the surplus extracted from socailist wage labor and so the monetary incentive to engage in it, leaving only the the incentive of a taste for domination and subordination; (3) let the law prohibit it in the normal way laws prohibit labor practices we do not like.
--jks