L H/39 (2018) (188-212)
En este artículo, tras analizar la delimitación y los referentes normativos del prin-
cipio de voluntariedad como elemento configurador del trabajo a tiempo parcial,
se concreta su concurrencia en la extensión del contrato, desde su inicio y desarrollo
hasta su finalización, y cómo su aplicación es imprescindible, para evitar la desnatu-
ralización de la relación laboral adquirida.
Palabras clave: principio de voluntariedad, trabajo a tiempo parcial, relación labo-
ral, subempleo, flexibilidad.
■ In spite of the fact that the figure of the part-time contract demands besides a
regular provision of services realized during a day lower than the ordinary compara-
ble one, that the same one has remembered a voluntary form, international organi-
zations notice on the increase and the excessive weight that is receiving the part-time
This voluntary nature gathered in different supranational classifications like one of
the major worries of the laws on the part-time work, for being the factor that distin-
guishes the part-time work of the visible underemployment, is not recognized in the
Spanish classification as one of the basic beginning in his regulation, up to the leg-
islative modification carried out by a transposition of the community procedure, for
the improvement of the labor market in relation by the part-time work and the pro-
motion of his stability.
In this article, after analyzing the delimiting and the normative modals of the be-
ginning of wilfulness as element configurator of the part-time work, his concurrence
makes concrete in the extension of the contract, from his beginning and development
up to his ending, and how his application is indispensable, to avoid the denaturali-
zation of the labor acquired relation.
Keywords: beginning of wilfulness, I work part-time, labor relation, underemploy-