Maya Pope-Chappell

It’s a stomach-churning sign of spring, as reliable as cherry blossoms or allergy attacks: reports of dead bodies rising to the surface of New York’s harbor and rivers as the water warms with the season. More of these so-called floaters are recovered from the city’s waterways in April, May and June than during the rest of the year combined, according to Capt. Anthony J. Russo of the New York Police Department Harbor Unit.

Lara Hirschfield tends to keep a doggy treat or two in her jacket pocket. But that's not the only place you'll find snacks for the dogs who "work" on Amazon's Seattle campus. Every reception desk is stocked with an assortment of treats. This is where employees and their four-legged friends tend to stop each day before going to their desk or their next meeting. Amazon, which ranked second on LinkedIn's Top Companies in the U.S. list, has more than 4,000 registered dogs.

It used to be that different kinds of companies needed different kinds of people. A hiring manager at a shipping company would never cross paths with a media company headhunter. But over the last decade, as technology has transformed every company and every competitive dynamic, those lanes are suddenly merging.