Employment Yes or No?
Has been shown that employment since ancient times subject legal regulation. In Roman law had the service contract (locatio conductio operarum) due to widespread slave labor only a subordinate role.
Nevertheless, it was there! The location conductio operarum performance and reward were regulated, so compensation in the form of Barem or in kind - food, working hours, the duration of the employment relationship or free days were defined for example as in the Roman contract of employment. Also "penalties" for absence from work or delayed payment of wages by the employer were already subject.
The risk of illness was the workers. Health insurance did not exist at that time. Private law court proceedings in the event of a dispute, there were already in the Roman Empire. Also training contracts. The traditional working conditions seemed bearable.