Some quick thoughts… Seem e.g. innovationsinfundraising.org
The evidence suggests that donation matching may not actually lead to people who donations are matched to necessarily donate more out of their own pocket.
However, it could be that by advocating donation matching you get more donations In total, as the idea of donation matching motivates the matcher to give more as well.
Consider reaching out to High Impact Professionals, a new charity which is helping people organize workplace giving campaigns. I'm not sure whether they'd have advice on getting donation matching set up, but there's a chance!