How to fill in the first working date of flexible employment insurance registration

Write the date of signing the labor contract. According to official website information of Social Security Bureau, the date of signing the labor contract is the date of the first social security registration, because according to national laws, enterprises must pay social security for employees when signing labor contracts, and flexible employees are freelancers, such as lawyers, freelance writers, singers, models, technical coolies, etc., so they are called freelancers or flexible employees.