The phrase "employee benefits" is an umbrella term that includes insurance programs, fully compensated absences (vacations, holidays, sick leave), pensions, stock ownership plans, and employer-provided services (such as child care) offered by employers to their employees. Employee benefits are also referred to as fringe benefits. Yet other benefits sometimes are treated by government as forms of income for tax purposes. These include bonuses, profit sharing, and the provision of a leased vehicle or housing. All "fringes" are by definition offered at the employer's option; thus employer contributions to Social Security, Medicaid, basic Medicare, Workers' Compensation, and other programs are not viewed as fringe benefits; they are required under law.