Bloomberg Gets a Royal Welcome at His Company

Bloomberg L.P., the financial news and data company, has rolled out the red carpet for its owner and founder, Michael R. Bloomberg.

After 12 years as mayor of New York and a vacation last week, Mr. Bloomberg reported to work on Monday at his company’s headquarters at 731 Lexington Avenue in Manhattan. He received an enthusiastic welcome from Daniel L. Doctoroff, the company’s chief executive.

“I’m thrilled to tell you that we’ll be seeing more of him at 731 Lexington and our offices around the world,” Mr. Doctoroff said in a memo to employees that was reviewed by DealBook. “When he’s in New York, Mike will most likely spend a few hours a day working from his new desk on the fifth floor. I know I speak for all of us when I say how excited we are to welcome him home.”

The memo was reported earlier by Capital New York.

Homecoming that it may be, the new job is with a company that has changed greatly since Mr. Bloomberg last worked there full time. For one thing, the current headquarters, known as the Bloomberg Tower, did not open until 2004, while Mr. Bloomberg was working at City Hall.

The company â€" whose data terminals sit on desks across Wall Street â€" found itself in an uncomfortable spotlight last year after revelations that its journalists had access to private data about its clients through channels that the clients did not know about. Bloomberg L.P. commissioned an investigation and vowed to make changes to its news operation.

At the same time, the newsroom faces skepticism from the business side that investigative journalism might not be worth the potential problems it could create for terminal sales, The New York Times reported in November. In China, where sales have dropped recently, tough reporting by Bloomberg News in 2012 prompted officials to cancel terminal subscriptions.

And yet, the transition for Mr. Bloomberg should be a smooth one. The former mayor is expected to work on philanthropy while at the company. He has a visit to South Africa scheduled for early February to attend a gathering of officials from cities around the globe.

Mr. Doctoroff, a former deputy mayor, recalled joining Bloomberg L.P. in 2008.

“When I worked in City Hall, Mike Bloomberg was never more than a chair swivel away. So when I came to the company, I was naturally worried about going through withdrawal,” he said. “But I discovered on my very first day here â€" as I’m sure we all have â€" that Mike’s DNA is deeply embedded in our culture.”

“Even though he’s been ‘on hiatus’ for the past 12 years, his world view and work ethic have been very much present,” Mr. Doctoroff continued.

That work ethic was on display Monday morning. According to a person briefed on the matter, Mr. Bloomberg arrived at the office bright and early â€" at 7 a.m.