What's the reason the first check is paper check and not direct deposit?

• prepaid debit card with direct deposit
• prepaid debit card direct deposit

A company could use an outside agent such as ADP to process payroll. Not all new employees get entered into the system in time for the contractor to issue the direct deposit - especially if the employee comes on bard in the second part of a pay period.

What's the reason the first check is paper check and not direct deposit?