If a slave on a plantation was injured by a piece of machinery so that he couldn't work in the fields anymore, the family that "owned" him would find "work" for him to do indoors as a sort of social security, even though they really didn't need a full-time person to do the "work" that they had created for him.

If a wage slave in a northern factory was injured by a piece of machinery, he was fired and usually starved to death on the streets.

Is it wrong to "own" another human being? Absolutely. But it is just as wrong to treat people as disposable cogs in your corporate machine.

Alex