The paper deals with valency frames for selected group of Czech verbs belonging to the domain of Law. Starting with the lexical database VerbaLex we propose semantic roles for these verbs and formulate their Complex Valency Frames. The lexical database Verbalex has been developed recently at the NLP Centre FI MU and contains approx. 10 500 Czech verbs. We integrate the proposed 'law' valency frames into it.