d1e9593-1-1__para__5
Although the Directive does not expressly require the worker’s consent to be in writing, in light of this case-law, the use of a written form setting out the exact extent of the agreement could help prove the worker’s express and individual consent.
Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as adopted (Official Journal); later amendments are not incorporated in this text.