Details:
According to a 2008 article, at least 37 states have legalized the contracting of prison labor by private corporations that mount their operations inside state prisons. The list of such companies contains the cream of U.S. corporate society: IBM, Boeing, Motorola, Microsoft, AT&T, Wireless, Texas Instrument, Dell, Compaq, Honeywell, Hewlett-Packard, Nortel, Lucent Technologies, 3Com, Intel, Northern Telecom, TWA, Nordstrom’s, Revlon, Macy’s, Pierre Cardin, Target Stores, and many more. All of these businesses are excited about the economic boom generation by prison labor. Just between 1980 and 1994, profits went up from $392 million to $1.31 billion. Inmates in state penitentiaries generally receive the minimum wage for their work, but not all; in Colorado, they get about $2 per hour, well under the minimum.
Source:
http://www.globalresearch.ca/the-prison-industry-in-the-united-states-big-business-or-a-new-form-of-slavery/8289 (2008)
http://www.freemanacademy.org/wp-content/uploads/2012/10/MCC-Essay-Brooklyn.pdf (2015)
http://repository.usfca.edu/cgi/viewcontent.cgi?article=1274&context=capstone (2015)