NEW YORK (CBSNewYork) — Even after being admitted to the hospital for anemia earlier this week, Ed Koch is still thinking about work.

The former New York City mayor expects to be released from New York/Presbyterian Medical Center sometime Friday, according to his spokesperson, who added Koch “said he’ll go straight to the office.”

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Koch has remained a fixture in New York City and is best known for saving it from the brink of bankruptcy in the early 1980s.

Since leaving office in 1989, he’s stayed on the front lines of politics, even launching a campaign against corruption in Albany two years ago.

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Koch continues to practice law. He also hosts a radio show, writes a newspaper column and served as a judge on “The People’s Court” for two years.

The 87-year-old was admitted to the hospital and underwent a blood transfusion Tuesday morning after he began feeling weak over the weekend while staying with friends in North Carolina, a spokesperson said.

The three-term mayor has had previous health issues, including a stroke, a heart attack and quadruple bypass surgery.

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