Excerpt: Like a lot of companies, Gen-Probe views employee benefits as a key to recruiting and keeping the best workers. But the Southern California biotech firm has found one unintended benefit from its 9/80 workweek program, which gives workers a day off every other Friday. 'We have a rule that we don't have meetings on Friday,' .... 'People look forward to working on Fridays now because they know they won't be interrupted by meetings and they'll be more productive.'