I am saying that the card's effect only applies when resting.
Whether at night, or during the day, regardless.
All staff members should be waking up in the morning with full energy, irrespective of the cards that they have assigned.
When you assign a girl to her task, the energy shows what will be deducted. So, for the first session fo the day, Julia, Kay, Hana, Amber & Laura will all show at 75% when you assign them to Reception, Maintenance, Security, Housekeeping & Medical duties, respectively.