I was severely admonished by my captain one day in cruise east bound for reading a newspaper between my regular panel scans. Reason given was degregation of lookout alertness. Next day after an overnight stop in Japan, we took off and climbed to cruise level west bound late afternoon, whereupon same captain plastered his windscreen with his Jeppeson enroute charts to keep the sun out of his eyes. I must admit, this was before the CRM concept. What to do?