JPMorgan announced that it will boost wages, open new branches and hire thousands of new workers, citing improved economic performance and sweeping changes to the U.S. tax code. Wages will rise to between $15 and $18 an hour from a range of $12 to $16.50 an hour, impacting 22,000 employees, the bank. The company will also open 400 new branches and hire 4,000 people in its new U.S. markets, housing and small business divisions.