I will countenance "reaching out" if it's a collective thing, so "I'm organising a reunion for such and such so I'm *reaching out* to everyone who was there, or who knows someone, or can help, etc. That's fair enough, because there is an element of exploration and extending enquiry to capture something without knowing the full outcome. By the same token at work you could "reach out" to anyone who may have experience of XYZ because you are setting up a project to fix XYZ and you need some help but you don't really know who to ask. But "reaching out" to someone you see every day at work and know exactly where to find, bollocks.