This field is used by the Create Pay Transactions to limit certain rules.
If the field is empty, the standard NAV/BC Employee field Employment Date is used instead.
If Lessor Payroll is installed, the field is hidden - and NOT in use, as Lessor Payroll already has such field.
See also
Reference
JobManager Employee
Employee
Agreement Pay Counters
This help includes both Dynamics NAV and Dynamics Business Central (BC). All references to NAV applies to both.