1 represents they are scheduled to work the 9am-3pm shift
2 represents they are scheduled to work the 3pm - 9pm shift
0 represents they are not scheduled to work that day
[tex]\begin{array}{c||c|c|c|c|c|c|c}&Mon&Tue&Wed&Thu&Fri&Sat&Sun\\Employee\ 1&1&1&1&1&0&0&1\\Employee\ 2&0&2&2&2&2&2&0\\Employee\ 3&2&0&0&0&1&1&2\end{array}[/tex]
Employees 1 & 2 will work 30 hours and have 2 days off in a row
Employee 3 will work 24 hours and have 3 days off in a row