I did work the 9/80 back when I work the the Oil company. It took getting used to, but I liked it. I took off the Friday. My current job we work 9hrs M-Th and 5hrs on Friday. This I really like a lot better. But since the 'OIL FIELD'(24/7/365) is one of our biggest clients, I do take phone calls Friday thru Sunday. And yes I do charge the client for the "off hour" calls.
Oh did I mention I do love having Friday afternoons off, especially during hunting season...

my 2 cents...
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2000 SE 4x4 (good bye)
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"The difference between death and taxes is death doesn't get worse every time Congress meets." -- Will Rogers (1879-1935)