The Employee Provident Fund (EPF) provides social security for employees by encouraging savings during employment. It benefits employees by saving for retirement, employers by ensuring a steady workforce, and the government by accumulating funds for economic projects. The EPF applies to establishments with 20 or more employees, as well as certain industries like cinemas and contractors, and once covered an establishment cannot withdraw from the program. Employers must contribute 12% of employee salaries to the EPF monthly.