As my friend shared his practical experience related to your issue, the following things may click if implemented well. Try to communicate them particularly one by one or find a mentor to pass your message in their own state of mind.
Schedule Training and Awareness Programs
Schedule training and awareness programs for them, showing them the calculative profits in hand after one year, what they will get. Brief them on the practical benefits of deducting PF, etc.
You can also say the same major share will be given by the employer if you agree to deductions. These monthly deductions on both sides (employer and employee) can be in the form of monthly savings. When shifting jobs, your PF account number will remain the same. When you really need this amount, it will help you a lot. At that time, you will feel proud of yourselves, grateful for your employer's contribution and policy for a better life for employees.
Organize such awareness programs always but after proper intervals. You have to clarify the benefits of PF deductions. Also, tell them that day by day, their experience will grow older, their salaries will increase accordingly, and their PF and ESIC amounts and facilities will grow in the same ratio.
Hope such things will do a lot.
Regards,
Manish Srivastava
ISO Consultant & HR
[Phone Number Removed For Privacy Reasons]