The ECJ decision in Federacion de Servicios Privados del sindicato Comisiones Obreras v Tyco Integrated Security SL and another (c-266/14) held that where employees do not have a fixed or habitual place of work, but have to travel to and from appointments arranged by their employer, their travel time falls within the definition of "working time" under the Working Time Directive (2003/88/EC). The case centred on Article 2 of the Directive, which defines "working time" as time spent "working, at the employer's disposal and carrying out his activity or duties, in accordance with national laws and/or practice". "Rest Period" is defined as "any period which is not working time".