The phrase "additional vacation" is correct and usable in written English.
It can be used when referring to extra time off from work or school beyond the standard vacation days.
Example: "After reviewing my workload, I decided to request additional vacation to recharge and spend time with my family."
Alternatives: "extra leave" or "supplementary time off".
A nonparent might choose additional vacation time.
Tuesday morning, instead of taking the additional vacation days she had planned for recuperation.
A federal judge approved a $558 million settlement, and some workers received additional vacation time.
If the boss says he cannot give more money, ask for other rewards, like additional vacation days.
This quarter, we'll continue with the current incentives, and it's my pleasure to announce that employees who do not engage in racketeering, embezzlement, or loitering during work hours will receive three additional vacation days, to use at their leisure.
Managers at Michoud are letting employees take Tuesday and Wednesday off, but are dissuading many foam workers from taking additional vacation time next week because General Deal and other officials want to question them, one employee said.
"After a few hours of focused activity, the rats returned to normal, then spent even more time raising campaign funds and taking additional vacations".
Over the next 60 days, HP will eliminate 3,000 managerial positions and will require employees to take an additional six vacation days by year's end.
Public recognition in the office, extra time off, an additional paid vacation day, the opportunity to telecommute, or any number of other incentives should do the trick.
Kim had gotten permission from Campbell to miss that day, which allowed her and Mike to spend additional time vacationing with Mike's family in Edmenton, Alberta - sightseeing through the Canadian Rockies and attending the wedding of Mike's first-grade buddy.
The musicians will receive an additional week of vacation, bringing the total to eight weeks each year.
