1 - The employer must transfer the employee's salary in a manner that can be proven in the future through the bank account. Therefore, only by depositing or check.
2 - The employer will pay insurance fees at the rate of 2%, calculated as follows: minimum wage (or higher), those who receive participation from a nursing company will deduct it from their monthly salary. National Insurance website
3- During 2018, the Nursing Reform took effect in favor of the entitled elderly employers. It is important and advisable to get to know the subject more closely and here is the link.