Here is an example.We have 4 drivers doing 5 eight hour days with each getting 2 hours overtime each day.UPS changes these jobs to 4 ten hour days.To do this you will need to add another driver doing 4 ten hour days to cover the other 4 drivers 5th day.Here is my math on the 5 eights $30x40hrs=$1200.+$45x10hrs(O.T.)=$450.Total$1650 each driver x 4drivers=$6600 is UPS`s cost for the week.Here is my math on using the 4 tens.$30x40=$1200 per driver.5 drivers=$6000 UPS`s cost.Looks like UPS is saving $600 a week by using 4 tens versus 5 eights.$600x52 weeks=$31,200 yearly savings? However factor in the cost of the extra driver needed to cover the 4 ten jobs.Health & welfare each month$1222 + pension $1446 each month total $2668.Take 12 months x this=$32,016.$31,200 yearly savings is reduced to losing $816.Plus did not take into account extra driver`s holidays,sick days,vacations,UPS paying matching social security,training,uniforms,etc.I know I am just a dumb truck driver and maybe I am missing something so would someone please tell me where is the savings?