Twist-3 TMDs within a light-front model

We discuss the two twist-3 Transverse Momentum Dependent parton distributions for unpolarized proton. We review their general, model independent decomposition, which follows from the QCD equations of motion. Then, we present results for the twist-3 distributions, using a light-front model for the Fock-states of three quark and three-quark plus one gluon.