During the early 1990s recession, Levi Strauss used the growing Casual Friday trend to promote its Dockers khaki brand as a workplace alternative to formal suits. In 1992, the company mailed its "Guide to Casual Businesswear" to roughly 25,000 human resources managers, showing employees how to assemble professional outfits that frequently featured Dockers. The campaign helped popularize business-casual dress across American offices and turned khakis into a workplace staple.
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