More than four out of every 10 workers in the Netherlands work regularly outside of normal office hours, according to research by national statistics office CBS.

The CBS said roughly 3.6 million people (44% of the workforce) regularly work between 19.00 and 06.00 or at weekends while another 1.9 million do this occasionally. Together these groups account for nearly 5.5 million or 66% of the working population.

Just over half of the work outside normal hours is done in the early evening or on Saturday.  Only about 33% work on Sunday, while one in seven work at night.

People who work outside office hours say they miss family activities more often than those who work strictly between 09.00 and 17.00. Work in the evening is the biggest culprit, with 21% of those doing so regularly missing out on family events.