If an employee clocks on but forgets to clock off what is the employers position in relation to paying the employee?

Depending on the regularity of the hours, the employer might just manually input a clock-out time. For instance, if an employee works 9-5 every day, the employer can just change the clock-out time to 5 and double-check with the employee to make sure it's correct.

Employee clock in software often eliminates this problem; some types will include an option for a reminder at the end of the day to clock out.