De Blasio says his predecessor simply was not handing workforce development correctly.
Building 77 will be a "modern manufacturing facility" that will create 3,000 new jobs, the mayor said.
The center is a partnership between the companies Per Scholas and Manhattan-based Doran Jones.
Berg'n will hold a job fair Tuesday to fill as many as 45 positions before it opens.
The job fair is scheduled for 11 a.m. to 3 p.m. Thursday at Hostos Community College.
The arena is screening applicants in June to fill security and guest services positions.
Close to 50 employers will come to this year's SUNY ATTAIN job fair.
Rangel said some of the biggest employers in his district have agreed to work together on a plan.
Madelaine Chocolate Factory celebrated its reopening after being severely damaged.
Whole Foods is looking to fill about 300 positions at the store it's opening in Gowanus later this year.
Target will host a job fair at the College of Staten Island Thursday through Saturday.
The International Speedway Corporation announced the $80 million sale of the Bloomfield site.
Of the 2,000 jobs at the Barclays Center, 1,900 are part-time and don't have benefits, officials said.
Christine Quinn will address the city's growing wealth divide in her final State of the City speech.
Madelaine Chocolate Company was wrecked by the hurricane, leaving 450 out of work.
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