Microsoft is said to be about to make its biggest round of job cuts since 2009, with the Nokia areas that overlap with Microsoft set to be the first to go.
Nokia was bought over by Microsoft in April, with 25,000 employees moving over to the computing giant as part of the $7.2bn deal.
It is believed that marketing and engineering will be some of the areas to see the biggest cuts, according to insiders who spoke with Bloomberg.
Suggestions have also been made that some of the cuts will be in the marketing departments for businesses such as the global Xbox team, with several hundred sales and marketing jobs already having been cut at Microsoft in 2012.
However, Microsoft chief executive Satya Nadella said in an email memo last week that "nothing was off the table" as the company looks to slim down.
It is predicted that the cuts, which could top the 5,800 jobs lost in the 2009 axing of roles, could be made this week.
Microsoft has not replied to a request for comment.