Paying insurance has something to do with the employer, not the occupation. 4S stores are required to pay five insurances, and the provident fund is slightly different according to different companies (generally, listed companies only have provident funds). Under normal circumstances, formal companies will sign labor contracts with employees and pay five insurances. Some individuals do not pay many small units, but will give a small subsidy, usually 300-500. Of course, it is more cost-effective to pay insurance.
Article 17 of the "Housing Provident Fund Management Regulations" stipulates the payment time.
Article 17 New employees shall pay housing provident fund starting from the second month of joining the work, and newly transferred employees shall pay housing provident fund from the date they are transferred to the unit.
In terms of terms, if you are a fresh graduate, the company can start paying the provident fund from the second month of employment. If you are recruiting from the public, you should start paying from the month of employment.