Due to currently lacking internationally comparable measurement and valuation methods of productivity loss of people with mental disorders, Work Package (WP) 3 of the ProgrammE in Costing, resource use measurement and outcome valuation for Use in multi-sectoral National and International health economic evaluAtions (PECUNIA, 2018-2021) focuses on the development of these methods. The first two objectives of WP3 were to establish harmonized definitions for productivity loss and its relevant domains for the six participating PECUNIA countries (Austria, Germany, Hungary, the Netherlands, Spain and United Kingdom) for mental disorders. Further, a standardized module for a multi-sectoral service and resource-use measurement (RUM) instrument was created ensuring cross-country comparability and transferability. In line with the final objective of WP3, based on the identified domains and valuation methods and compatible with the developed WP3 RUM module, a standardized costing templates for productivity loss was developed in accordance with HA4 (‘Valuation’), corresponding to Deliverable 3.4. This Deliverable 3.4 report presents the activities and results related to the final objective of WP3, i.e. the development of standardized unit cost templates for productivity loss by the Erasmus University Rotterdam (Erasmus School of Health Policy & Management) until December 2019. Suggested citation: Hakkaart-van Roijen L, Hubens K, Sajjad, A on behalf of the PECUNIA Group (2019): Standardised costing template for selected costing approaches: production loss of paid and unpaid work. Deliverable D3.4: PECUNIA project. Erasmus University Rotterdam, Netherlands. DOI: 10.5281/zenodo.4455444