The restructure could see changes to the locations of the L&G offices, including its headquarters in Surrey, which are all currently undergoing consultations.
Its Surrey headquarters, based in Kingswood, employs 1,700. L&G also employs 1,300 people in Hove, 1,300 in Cardiff, and 600 in Birmingham and Witham.
“Our business units across all locations are actively considering their office requirements on an ongoing basis as part of our broader long-term business strategy,” said an L&G spokeswoman in a statement.
She said the company is in the process of developing detailed proposals for rearranging its business areas in order to improve customer service and efficiency.
“We must remain competitive on cost to deliver the best value for our customers, this includes optimising the use of our locations.”