"Multiplex workplace friendships are exhausting because they create feelings of responsibility and obligation, and because they require investments of attention and energy toward their maintenance. Thus, although there are positive effects of multiplex workplace friendships on job performance, they should be offset somewhat by the effect of exhaustion, which reflects reduced energy and attention that could otherwise be applied to core job performance‐related activities (Greenhaus & Beutell, 1985; LePine, Podsakoff, & LePine, 2005)."