One reason is the massive wave of regulation that has engulfed many industries over the last few years. One prime example is the 848-page Wall Street Reform and Consumer Protection Act of July 2010 (also called the Dodd-Frank Act). It is estimated that provisions of the act will eventually generated some 30,000 pages of regulations. The act required its regulators to create new 243 rules, conduct 67 studies and issue some 22 periodic reports.
There is also Obamacare which itself will generate some 20,000 pages of regulations, many of which American employers will have apply to an increasingly overburdened workplace.