HONG KONG--A top IPO banker at UBS AG has been reinstated after being suspended amid an internal probe into the hiring of an employee linked to a Chinese company that awarded business to the Swiss bank, according to people familiar with the matter.

Joseph Chee, a decadelong veteran at UBS and head of global capital markets in Asia, was suspended as the bank investigated his role in the hiring of Joyce Wei, a relative of the head of a company that has hired UBS to manage its planned public offering.

The return of Mr. Chee comes as foreign investment banks in Asia grapple with a U.S.-led investigation into the hiring of connected recruits in China to win business. J.P. Morgan Chase & Co. on Monday was forced to reshuffle its top Chinese investment-banking executives following the retirement of Fang Fang, who had served as chief executive of investment banking in China.

Mr. Fang left the bank amid the U.S. investigation into the bank's hiring practices in China, a probe that has rattled the investment banking community in a country where the recruiting the children of connected officials or company executives by banks was common.

The review at UBS started after the Swiss bank conducted its own internal probe in the wake of the U.S. investigation. In its sweep, UBS turned up a "technical breach of process" in the hiring of Ms. Wei, said a person familiar with the matter, who wouldn't elaborate further.

Joyce Wei is the daughter of the chairman of Tianhe Chemicals, a privately owned mainland Chinese company, people familiar with the matter said in February.

UBS is working closely with Tianhe on its $1 billion Hong Kong initial public offering, which is expected to take place in the third quarter. J.P. Morgan walked away from working on the potential Tianhe deal because it wanted to avoid being accused of getting the business through Ms. Wei's connections, even though it started handling the IPO before she joined the firm, people familiar with the matter said in January.

Ms. Wei is an associate in UBS's equities capital markets team, which handles share sales for companies across the region, and joined the Swiss bank in November from J.P. Morgan Chase Co., people familiar with the matter said in February. The chemicals company also considered a London IPO in 2011, but UBS wasn't one of the banks working with Tianhe at the time. Tianhe is China's largest producer of lubricant-oil additives and a leading global producer of specialty fluorochemicals used for purposes such as making water-repellent surfaces.

Mr. Chee has returned to work in the same position and without any changes to his role, this person said. A colleague of Mr. Chee, Sharlyn Wu--who was also put on leave--hasn't yet returned to work, the person said.

Mr. Chee, a China banker, is of one the most senior executives in UBS's Asian operations and has played a key role in some of the region's biggest public offerings in recent years.

UBS was involved in the US$2.8 billion IPO of debt-clearing agency China Cinda Asset Management Co., which raised US$2.8 billion from a Hong Kong IPO late last year and the around US$2 billion IPO of Thai telecom operator True Telecommunications Growth Infrastructure Fund.

In January, China ended its moratorium on domestic A-share IPOs. UBS was an underwriter on one of the four domestic IPOs of Chinese companies that had foreign bankers since the moratorium was lifted.

It advised sportswear manufacturer Guirennaio Co, on its 943 million yuan IPO in January.

IPO volumes in Asia Pacific have reached $16.4 billion in the year so far, the highest year to date level since 2011, according to data provider Dealogic.

Write to Enda Curran at enda.curran@wsj.com

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

THC Farmaceuticals (PK) (USOTC:CBDG)
Historical Stock Chart
From Mar 2024 to Apr 2024 Click Here for more THC Farmaceuticals (PK) Charts.
THC Farmaceuticals (PK) (USOTC:CBDG)
Historical Stock Chart
From Apr 2023 to Apr 2024 Click Here for more THC Farmaceuticals (PK) Charts.