Paperwork-wise, either you have never met France, either you didn't compare.
- Flat rental applications contain 2 years of tax return forms, 3 months of salary proof, for yourself and for a third person (or bank) who will guarantee you.
- As a self employed there are 18 different organizations to whom I must lodge contributions: VAT, retirement, retirement 2, training, universal income, disability, elderness 1, elderness 2, elderness 3, illness, health insurance, health insurance 2, workplace safety, help for housing, help for various institutions who went bankrupt, Commerce chamber, CSG, corporate tax, land tax. Employed people pay the same, plus unemployment, the employer handles half the paperwork but employees who don't cross-check are penalized.
- Each of them have an application form and half of them are monthly. Most of them apply on weird rules ("7.23% on 98.5% of revenue within limit of 1200 PASS if the revenue is ... and 1400 PASS if ..."). Some of them are taken, but don't give you benefits because you don't fit the rules (as you talked about pumping money from workers). Some are taken and refunded later.
- There are lunch tickets and holiday grants, for about 200€ per month, your employer must fund the employee bureau for this, but you need to apply to get them granted. Most usually you'll have to lodge an application for that, with your tax return and salary sheet, and you'll have fewer benefits if you don't have children. For example you'll be offered a rebate on a house rental for 5 people, which exactly fits the family of the employee managing the appcations.
- If you were a foreigner, you would also have to file for a visa and work permit, which means in average 0,5 day per trimester queuing in person at the Prefecture for various reasons.