Aviva Investors sent an e-mail by mistake on Friday dismissing its entire staff before retracting the message, according to reports.
The e-mail, which was sent by Aviva Investors' human resources department to 1,300 employees globally, was really intended for just one recipient.
It told employees to turn over company property as they left the building and reminded them of their obligation to guard the firm's confidential information.
A spokesman for the group told Bloomberg: "It was intended that this e-mail should have gone to one single person. Unfortunately, as a result of a clerical error, it was sent to all of the Investors' staff worldwide. From time to time, things go wrong."
The human resources department issued an apology "fairly quickly" after the message was sent, according to the spokesman.
Aviva has been scaling back its asset management business and said in January it would cut 160 jobs at the unit as it streamlines its active management capabilities for the retail market, pulling back on London-based equity strategies such as SRI.
"We propose to reduce our cost base by focusing on our main strengths - fixed income, real estate and multi-asset solutions for institutional clients," Aviva Investors CEO Alain Dromer said at the time.
It was subsequently announced last week that Dromer is to leave the group as part of a process to create a "flatter organisation"
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