By Dave Sebastian

Aon PLC said its profit rose for the second quarter, a period that included economic volatility brought on by the Covid-19 pandemic.

The professional-services firm that offers insurance-brokerage services on Friday posted net income of $398 million, or $1.70 a share, compared with $277 million, or $1.14 a share, in the year-ago period.

Adjusted earnings were $1.96 a share. Analysts polled by FactSet were expecting adjusted earnings of $1.93 a share.

"We are living in a time of increasing economic and geopolitical volatility--as evidenced by the COVID-19 pandemic and broader social injustice and unrest--which demands action within our firm and on behalf of clients," Chief Executive Greg Case said.

Revenue fell 4% to $2.5 billion in the year-ago period, or down 1% on an organic basis. Analysts were looking for $2.55 billion. The company said revenue was down partly because of foreign currency translation.

Write to Dave Sebastian at dave.sebastian@wsj.com

Corrections & Amplifications

This was corrected at 11:03 a.m. ET because the original version incorrectly said Aon PLC was an insurer. The company is a professional-services firm that offers insurance-brokerage services.