The purpose of employee benefits is to increase the economic security of staff members, and in doing so, improve worker retention across the organization.[2] As such, it is one component of reward management. Colloquially, "perks" are those benefits of a more discretionary nature. Often, perks are given to employees who are doing notably well or have seniority. Common perks are take-home vehicles, hotel stays, free refreshments, leisure activities on work time (golf, etc.), stationery, allowances for lunch, and—when multiple choices exist—first choice of such things as job assignments and vacation scheduling. They may also be given first chance at job promotions when vacancies exist.