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They have no work ethic. They're just a bunch of slackers.

So I told my boss, "If you're looking for loyalty, buy a dog."

He treats me like the girl who came across the street to mow his grass. How can I establish credibility with this man who is old enough to be my grandpa?

Here's the fun part: The workplace is flatter and more fast-paced than ever before. Here's the hard part: People from different backgrounds must work together, without getting to know one another first. Maybe that's why the sentiments expressed above sound so familiar. The generation gap is alive and well. But these days, the most heated arguments are over how you work and run your team, not over how you practice your politics or wear your hair.

"Generations at Work" is intended to help you bridge the gap -- or, more accurately, the gaps -- between people of different ages who work at your company. What's so vexing (and potentially so powerful) about the workplace is that four different groups are vying for roles and recognition. There are veterans (born between 1922 and 1943), boomers (born between 1943 and 1960), Xers (born between 1960 and 1980), and nexters (born after 1980). The people in each cohort, the book argues, have more in common than just their age: They share memories of the same world-shaping events, the same childhood heroes, the same early work experiences.

Little wonder, then, that members of each generation tend to share many of the same attitudes toward work and leadership. Boomers, for example, have embraced a team-based approach to business, because they are eager to shed the command-and-control style of veterans. But, the authors speculate, nexters -- the children of boomers and Xers -- may well thrive in a workplace that resembles what boomers have rejected. "It looks like, as workers, [nexters will] resemble the veterans in many ways: their belief in collective action, optimism about the future, trust in centralized authority, a will to get things done, and a heroic spirit in the face of overwhelming odds."

Learning about differences may be fun. But learning about cooperation is useful. And it's here that "Generations at Work" becomes a valuable tool. At the heart of the book are case studies of five well-known companies -- including T.G.I. Friday's, Ben & Jerry's, and Lucent Technologies -- that have developed creative ways for different generations to get along. These companies are different from one another, with unique histories and values, but they have all embraced common principles to create a harmonious workplace.

Each company has tried to create a work culture that not only focuses on what needs to get done but also accommodates the various ways in which people approach work. Employees at Lucent (a spin-off of AT&T, a century-old company that values seniority and titles) founded IdeaVerse, a training center that encourages creativity. And at Ben & Jerry's, the company has a "Joy Gang" that regularly sponsors a "Corporate Dress-Up Day" -- so that employees can pretend to be the suits that they're not.