33. Trade and Other Payables

in thousands of EUR	Notes	31 December 2017	31 December 2016

Trade payables		198,646	180,889
Accrued expenses		93,254	108,019
Employee related payables		108,462	97,973
Other taxes and social security		68,490	76,501
Deferred income		75,862	64,266
Payables to related parties	37.1	12,713	23,414
Contingent consideration		26,690	3,756
Other payables		55,431	33,606
		639,548	588,424

In 2017, the increase in contingent consideration mainly relates to the acquisition of additional shareholding in Visilab in 2018.

The carrying value is assumed to approximate the fair value due to the short-term nature.