On The Job is a series of conversations with the people who keep neighborhoods running.
Leah Esguerra, a social worker in San Francisco, begins her workday roaming in between the bookshelves at the city's Main Library. She's looking for homeless people who need her assistance. Esguerra is the nation's first library social worker. Since 2009, she's been providing social services and outreach programs to many of the city’s homeless patrons.
