Nice try K and yes, Ford did apply the notion in 1914 but he did not create the 8 hour day. You leave out a whole bunch of history on the matter, which involves early labor movement. Here's a blurb from an international history of the 8 hour day and if you click the link and read the whole thing you'll be amazed at how early the movement started... as early as 1836 in the U.S. Earlier in other countries.
In the United States, Philadelphia carpenters went on strike in 1791 for the ten-hour day. By the 1830s, this had become a general demand. In 1835, workers in Philadelphia organized a general strike, led by Irish coal heavers. Their banners read, From 6 to 6, ten hours work and two hours for meals. Labor movement publications called for an eight-hour day as early as 1836. Boston ship carpenters, although not unionized, achieved an eight-hour day in 1842.
In 1864, the eight-hour day quickly became a central demand of the Chicago labor movement. The Illinois legislature passed a law in early 1867 granting an eight-hour day but had so many loopholes that it was largely ineffective. A city-wide strike that began on May 1, 1867 shut down the city's economy for a week before collapsing. On June 25, 1868, Congress passed an eight-hour law for federal employees which was also of limited effectiveness. (On May 19, 1869, Grant signed a National Eight Hour Law Proclamation.)"