This study analyses the effects that the project management certification has on employability. This analysis started with a participative process in which various groups of experts who are involved in the certification of people were consulted. A personal interview was carried out amongst 106 professionals -certifying bodies, training institutions, the civil service, and international organisations-and amongst professional who are certified in project management by the International Project Management Association in Spain. The results show that the certification emerges as a powerful tool for improving employability. The effects are demonstrated across two complementary aspects: internal company aspects and external aspects relating to the labour market. Finally, by compiling the different agents' opinions, a series of measures emerge for improving the accreditation processes as an employability tool and increasing the mutual learning between public and private actors. level within the population is linked to employability and that these skills should be adapted quickly in order to respond innovatively to the structural changes that are currently being experienced. This so-called life-long learning [36] is in response to said challenge and was adopted as a political objective for the member states of the OECD in 1996 [34]. Certification systems for professional skills are seen as tools that aim to improve people's employability and learning [20]. Therefore, the concepts of life-long learning and employability are strongly linked to these systems which are focused on skills and learning from a particular job [33], [34].Currently, there are several active certification models for personal skills -both professional and industrial-most of which are recognised internationally. In Spain there are currently five certified organisations for professional skills which are better known and more credible for the following reasons: a) their certifying bodies are internationally recognised and they apply rules at an international level; b) they are accredited by the National Accreditation Body (ENAC), according to the applicable international standard ISO/IEC 17024: 2003 and other stipulated accreditation requirements for organisations that certify people; c) they are based on models which have a voluntary element by which certain professionals improve public recognition of their skills and abilities.In Spain there are five such certification models for professional skills which meet these three requirements. They are associated with different areas; The European Organization for Quality (EOQ), The International Project Management Association (IPMA), The Project Management Institute (PMI), People Capability Maturity Model (P-CMM), and Coaching.This study investigates in Spain the effect that the project management certification -IPMA's universal four level certification system-has on employability. This universal system has been present in Spain since the year 2000 through AEIPRO (Asociación Española de Ingeniería de Proyecto...