In my region, salary lotteries are very popular in many workplaces. I don't know what's the exact English term for his but we call it that name. The purpose of salary lottery is that 5-6 employees collect together and they play lottery. The first winner gets the salary of every worker, in the next months the second winner gets everyone's salary and that's it. There isn't a random winner, everyone gets their salary back but the fate of who is the first person to receive the salary is decided via a simple coin flip.
For example, imagine that there are 6 people and salary of each person is $1000. They determine via coin flip who is the 1st, 2nd, 3rd, 4th, 5th and 6th. First gets $6000 in the end of the month, in the next month, the second gets $6000 and in 6th month, the 6th person gets $6000. You may ask me how do they live for 6 months without a salary? Family members take care of them. Too many people work for fun because sitting at home is boring for them but they don't have enough money to have fun too.
In my country, we also have such type of lottery but we usually do not put whole amount of our salary in these funds. In our case, we decide that the lottery is of 1000$ (an example) and there are five people contributing 200$ each month. So we have a lucky draw and the names are found in the order of one to five, with the first person getting 1000$ in the first month, then 2nd person getting his 1000$ in the 2nd month and so on until everyone gets their share.
Usually it is difficult to save money individually and people use this method to get their savings and then when they get that lump sum amount, some may use it to meet their big expenses.