Ericsson is the Swedish multinational company founded in 1876 by Lars Magnus Ericsson and focused in networking and telecommunications. Ericsson, headquartered in Stockholm, is World leader selings in infrastructure, software, and services in information and communications technology for telecommunications service providers and enterprises, including, among others, 3G, 4G, and 5G equipment, Internet Protocol (IP) and optical transport systems. Ericsson has over 57,000 granted patents and employs around 100,000 people operating in more than 180 countries.

Ericsson was established in Spain in 1922 and opened its first factory in Spain in Getafe (Madrid) in 1924. In 1926, Ericsson made its first contribution to the Spanish telephone network with the installation of a central AGF exchange in San Sebastian. Until the late 1960s, Ericsson had a presence in areas such as telex and strategic networks for the military, and in 1969, Ericsson was chosen by Telefonica as a supplier of transmission equipment. Since that time Ericsson opened a factory in Leganés (Madrid) in 1974 with significant contribution with the installation of the first digital switching center in the central AXE Telefonica de Atocha in 1980. Many transformations happened in Spain from that time and is perfectly illustrated in the evolution of the workforce, which remained stable at an average of 3,300 employees, but experienced a substantial change in its composition. In 1990, approximately 70% of the workforce was composed of blue-collar workers, but by the end of the decade, they only accounted for 10% of the workforce. During the same period, the average age of employees dropped by 10 years to the age of 35.