In 1969 he published his first book De werksters van half vijf en andere gelijkenissen.

He won the Zilveren Griffel award in 1975 for his book De vreselijk verlegen vogelverschrikker.
In 1984 he won the Gouden Griffel award for his book Liefdesverdriet.
In the seventies of the twentieth century he was also a member of Het Schrijverscollectief, a group of writers which included Eykman, Willem Wilmink, Hans Dorrestijn, Ries Moonen, Jan Riem and Fetze Pijlman.
Together they contributed to television shows such as De Stratemakeropzeeshow and De film van Ome Willem.

In 1986 he published the book De zaak Jan Steen which was the Kinderboekenweekgeschenk during the Boekenweek that year.

The Karel Eykman school in Amstelveen is named after him.

Many of his books were published by Uitgeverij De Harmonie.
In 1969 he published his first book De werksters van half vijf en andere gelijkenissen.
He won the Zilveren Griffel award in 1975 for his book De vreselijk verlegen vogelverschrikker. In 1984 he won the Gouden Griffel award for his book Liefdesverdriet. In the seventies of the twentieth century he was also a member of Het Schrijverscollectief, a group of writers which included Eykman, Willem Wilmink, Hans Dorrestijn, Ries Moonen, Jan Riem and Fetze Pijlman. Together they contributed to television shows such as De Stratemakeropzeeshow and De film van Ome Willem.
In 1986 he published the book De zaak Jan Steen which was the Kinderboekenweekgeschenk during the Boekenweek that year.
The Karel Eykman school in Amstelveen is named after him.
Many of his books were published by Uitgeverij De Harmonie.
Karel Eykman