[ noun ] someone who takes the place of another (as when things get dangerous or difficult)
"the star had a stand-in for dangerous scenes" "we need extra employees for summer fill-ins"
Used in print([Anonymous,] "The Attack on Employee Services"...)
Which is more economical for your plant - a vacation shutdown or spaced vacations that require extra employees for vacation fill-ins ?
Can vacations be spaced throughout the 12 months to minimize the number of employee fill-ins ?