The first branch of Oris was opened in 1904. Oris’ first factory was run by only 24 workers. ORIS employed more than 300 people in Hölstein in 1911, they built houses and flats for the workers and became the largest employer in the area.

Shortly after the founder, George Christian, died in 1927 Oscar Herzog became the CEO of Oris, a position he held for the next 43 years.

Between 1946 and 1981, Oris owned ten buses which were used to transport up to 800 workers to its many factory locations. The original Oris factory founded in 1904 continuously expanded and by the 1960s Oris became one of the top ten largest watch producers in Switzerland.

Oris began producing the “famous Automatic Movement cal. 645 with 25-jewel lever escapement” in 1966. In 1991 the “complication movement cal. 581”  was developed, with moon phase display, week day, date and a second time zone.

In 1968 Oris obtained full chronometer certification from the Neuchâtel Observatory for movement cal.652.

In 1996, Oris organized the: Oris London Jazz Festival; this was one of Oris’ first large sponsorship events.

In 1997, Oris produced the Oris Hong Kong Commemorative Watch, to commemorate Hong Kong’s handover to China. Oris produced a limited timepiece to represent the 100 years of watch production In 2004; only 1904 watches were produced to resemble the date that Oris was founded, each watch is individually numbered. In 2009 Oris launched a limited edition watch for Bob Dylan.