id	definition
AB	Absent
AL	Legitimate Absence
CL	Compassionate Leave
DH	Deadhead
GU	Guarantee
HO	Holiday
JD	Jury Duty
LO	Layover
MC	Missed Call
ML	Military Leave
MO	Marked Off
OP	Other, Paid
PD	Personal Day
RD	Rest Day
RF	Refused Work
SD	Sick Day
SU	Suspension
VC	Vacation
WK	Work