Aon PLC on Friday reported organic revenue growth of 5% in the third quarter of 2019, including 7% organic growth in its commercial insurance brokerage unit and 5% organic growth in its reinsurance division.

“We expect strong performance in the fourth quarter, resulting in continued progress for the full year against our goal of mid- to single-digit organic revenue growth or greater over the longer-term,” CEO Greg Case said during an earnings call Friday.

Aon delivered 6% organic revenue growth year-to-date, up from 5% in 2018, and a continued improvement from 4% in 2017 and 2016, and 3% in 2014, Mr. Case said.

Foreign exchange headwinds due primarily to a stronger U.S. dollar had a negative impact, with Aon reporting just a 1% increase in total revenue to $2.38 billion in the third quarter, compared with $2.35 billion in the same period last year.

“Reported revenue is being pressured throughout 2019 by an unfavorable impact of changes in FX,” Christa Davies, executive vice president and CFO, said during the call.

“If currency remained stable at today’s rates, we’d anticipate an unfavorable impact of 4 cents, or approximately $12 million reduction of operating income in the fourth quarter,” Ms. Davies said.

Adverse impact from divestitures, net of acquisitions, also partially offset revenue growth, Aon said.

Revenue for the brokerage’s core commercial risk unit increased 2.7% to $1.06 billion, reinsurance brokerage revenue increased 4.3% to $291 million, retirement solutions revenue fell 3.4% to $484 million, health solutions revenue was flat at $279 million and data and analytic services revenue increased 3.0% to $271 million.

Increases in the commercial pricing environment had a “modestly positive impact on results,” Mr. Case said during the call. “Our highly client-centric approach is one of the reasons business generation and retention levels are at an all-time high,” he said.

Aon incurred $63 million of restructuring-related charges in the third quarter, bringing total restructuring charges to $1.26 billion since the beginning of the program in 2017. The program, which includes an up to 5,400 reduction in staff numbers, according to previous Aon filings, resulted in $137 million in total savings in the third quarter, an increase of $32 million year-over-year, Aon said.

All remaining charges associated with the restructuring will be completed by the fourth quarter, Aon said.

“We’re delivering on restructuring initiatives and funding significant investments across the firm that will deliver improved financial performance long-term,” Ms. Davies said during the call.

Aon reported net income of $228 million, up 49% from the same period last year.

For the first nine months of 2019, Aon reported revenue of $8.13 billion, a 1.9% increase over the same period in 2018, and net income of $1.19 billion, up 45%.