“…An extensive literature study of measures of office employment shows that most studies use employment in finance, insurance and real estate (FIRE), and service industries as a proxy for office employment. This type of office employment definition is used by for example Hekman (1985), Wheaton (1987), Wheaton et al (1997b), Sivitanides (1997), Sivitanides (1998), Shilton (1998) Hendershott et al (1999), Mourouzi-Sivitanidou (2002) 6 , Hendershott et al (2002), Farrelly and Sanderson (2005), and Englund et al (2008a, b). Other studies use a narrower approximation of office employment which only includes FIRE industries (see for example Rosen (1984), Hui and Yu (2006) and Pollakowski et al (1992).…”