1 Instroduction 1

2 Background literature 2

  2.1 Twin Transition 2

  2.2 Skills and Tasks for the Twin Transitions 6

    2.2.1 Measuring labour quality 7

    2.2.2 Digital Skills and Green Tasks 8

    2.2.3 Interactions and complementarities 12

3 Descriptive evidences 12

  3.1 Green and Digital Intensities 12

  3.2 Complementarities 14

4 Empirical Strategy 17

  4.1 The Baseline Augmented Production Framework 17

  4.2 Testing  the  Productivity  Impact  of  the  Twin  Transition: the role of Intangible Capital 18

    4.2.1 Identification Strategy and Endogeneity 19

5 Empirical Results 19

  5.1 Baseline Estimates and the Twin Transition 19

  5.2 Intangible capital and the twin transition 21

6 Conclusion 24