If you have an employees earning 30 000$ per year, paid by-weekly (26 pays) and working 40 hours per week, then his hourly rate will be 14.42$/hr.
But if you have an employee earning 30 000$ per year, paid by-weekly and working only 34 hours per week, then he needs a special Work Schedule Rule where Employment at 100 % (IT0007) will give 34 hours per week in order to get an hourly rate of 16.97$/hr.
With the current WSR at 85%, his IT0008 should also reflect the 85% and have the same hourly rate (14.42$/h) as a Full-time Employee but with an annual salary of 25 494.56$ (14.42 x 34 x 2 x 26).