The Work and Pensions Committee is questioning David Gauke on Universal Credit.
Committee members hold a scrutiny session with the education secretary. In plenary AMs quiz the environment and communities secretaries.
EU migration commissioner Dimitris Avramopoulos appears before the European Parliament's home affairs committee.
Finance Secretary Derek Mackay says air passenger duty is not in a fit state to be passed to Holyrood.
No sign of the Brexit bill this week - a mix of debates fills the time instead.