We present here an agent-based model and simulation of the French labour market - WorkSim. Based on an existing economic model, ARTEMIS, WorkSim is a full multiagent system, where agents (e.g. individuals, firms) possess detailed attributes and elaborated behaviours in order to reflect the real labour market as close as possible. We illustrate our approach with two main simulation results: the reproduction of one peculiar stylized fact, i.e. discrimination against the youth, and the impact of a new labour contract introduction.