See, the phrasing in the benfits document is odd. Because it first says, "Sick time is available to replace income when a scheduled shift is missed", but then later says "If the need for sick time is foreseeable, you must provide reasonable advance notice..."

The latter makes it sound like you can scehdule use of sick time beyond any currently published schedules.

According to the Benefits Plan Description, you can use sick time to cover for physical and mental health well-being.