Bank of America is an American multinational banking and financial services corporation headquartered in Charlotte, North Carolina.

As you asking for Bank of America Working Days, so here I am providing Bank of America holiday list so on that basic you can find out its working days :

Bank of America Holidays 2017

Jan 2 New Year's Day
(observed on the 2nd) Monday
Jan 16 Martin Luther King Day Monday
Feb 20 Presidents' Day Monday
Apr 16 Easter Sunday
May 29 Memorial Day Monday
Jul 4 Independence Day
Tuesday
Sep 4 Labor Day Monday
Oct 9 Columbus Day Monday
Nov 11 Veterans Day Saturday
Nov 23 Thanksgiving Thursday
Dec 24 Christmas Eve Sunday
Dec 25 Christmas Day Monday

Bank profile:
Type Public
Traded as NYSE: BAC
S&P 100 Component
S&P 500 Component
Industry Banking, Financial services
Predecessor Bank America
NationsBank
Founded October 17, 1904; 112 years ago (as Bank of Italy)
February 1930; 87 years ago (as Bank of America)
October 1998; 18 years ago (current)
Founder Amadeo Giannini
Headquarters Charlotte, North Carolina, United States
Area served Worldwide
Key people Brian Moynihan
(Chairman and CEO)
Products Consumer banking, corporate banking, finance and insurance, investment banking, mortgage loans, private banking, private equity, wealth management, credit cards,
Revenue US$83.70 billion (2016)
Operating income US$25.15 billion (2016)
Net income US$17.90 billion (2016)
Total assets US$2.187 trillion (2016)
Total equity US$266.8 billion (2016)
Number of employees 208,024 (2016)
Divisions Bank of America Home Loans, Bank of America Merrill Lynch
Subsidiaries Merrill Lynch
U.S. Trust
Capital ratio 10.2% (2015)
Rating Long Term Senior
Moody's: Baa1 (10/2016)
S&P: BBB+ (10/2016)
Fitch: A (10/2016)