Case: Lincoln Electric Co.
Key takeaway: Keep it simple.
What happened: One of Harvard's classic cases, with over 200,000 copies sold, examines the unique culture and strategy of what was the largest manufacturer of arc-welding products in 1975. The company provided no benefits and didn't have a union. It also provided guaranteed employment, employee equity, and gave management responsibility to workers.
Particularly unique was the way it paid its workers, in a piecework fashion with bonuses based on the company's revenues. Workers generally earned significantly more than those at similar companies, but the company was still productive at low cost.
Lincoln's strategy was unusual, but very clear, consistent, and successful in motivating its workers.