theres companies making money off of prison labor, if u want a not very subtle example. in the US, prisons are also for-profit institutions, making it even more insidious.
then ur typical capitalist labor situation ofc. ur boss makes more off of their workers labor than their workers get paid. this “surplus value” is how bosses get richer than the ppl who work for them; all without having to do any actual work of their own.
ow also landlords who rent housing to ppl for a price, often providing very little or even no maintenance at all for that building. this exploits peoples need of shelter for the landlords personal gain, as landlords squeeze as much money out of ppl as they can get away with (also for example, keeping security deposits for no good reason).