| In this paper we define a model, namely the recursive ECATNets (Recatnets) based on a sound combination of Extended Concurrent Algebraic Term nets and Recursive Petri nets, allowing a concise modeling of dynamic reconfiguration mechanisms of flexible workflow processes. The descriptive power of Recatnes is well-suited for collaborative workflows modeling. Moreover the use of model checking techniques to prove liveness and safety properties becomes possible due to their semantics defined in conditional rewriting logic. |