The world's largest toymaker, Denmark's Lego, has said it will offer its 20,000 employees three extra days of holiday and a special bonus after a year of bumper revenues.

Already popular globally, Lego has seen demand for its signature plastic bricks soar during the pandemic alongside its rapid expansion in China.

"The owner family wishes to... thank all colleagues with an extra three days off at the end of 2021," the company said in a statement.

The unlisted family group reported a net profit of more than 6.3 billion Danish kronor (€847m) for the first half of 2021.

Revenues shot up 46% to 23 billion kronor in the same period.

It had been "an extraordinary year for the Lego Group and our colleagues have worked incredibly hard," said the statement, which added that an unspecified special bonus would be paid to staff in April 2022.

Lego, a contraction of the Danish for "play well" (Leg godt), was founded in 1932 by Kirk Kristiansen, whose family still controls the group which employs about 20,400 people in 40 countries.