Ralf Sikorski trained as an electronics technician for energy systems at the Osterfeld/Sterkrade mine in Oberhausen. From 1981 to 1988 employed as an electrician at the Osterfeld/Sterkrade mine. During this time volunteered as a youth representative (1980 to 1984) and works council (1984 to 1988, from 1987 exempt worker). From October 1985 to July 1986, the employment relationship was suspended due to a successfully completed degree at the Social Academy in Dortmund.
Employed as trade union secretary of the IGBE / IG BCE since October 1988. First as a secretary in the youth department and from 1989 in what was then the Essen district. From July 1990 to October 1997 he headed the youth department at the IGBE headquarters in Bochum. With the founding of IG BCE, he worked in Frankfurt am Main from 1997 to 2003 as deputy district manager for Hesse/Thuringia and then as district manager in the district of Ludwigshafen. Since February 2008 head of the state district of Rhineland-Palatinate/Saarland. Member of the executive board of IG BCE since the trade union congress in 2013. Since June 2019 deputy chairman of the IG BCE. He is currently responsible for collective bargaining and industry groups.