Once an employment contract is agreed upon and a valid contract is formed under Illinois contract laws, an employment contract can be enforced in court. Under the Minimum Wage Law and the Illinois Wage Payment and Collection Act, an employer is obligated to pay an employee for all time worked.Under Illinois law, these agreements are void unless an employee receives adequate consideration and there is no undue hardship placed on them. In the landmark case of Fifield v. The Act goes into effect on July 1, 2024. The Act requires contracts and payments to freelance workers be made in a timely manner. In Illinois, the baseline legal presumption is that an employee serves his or her employer at the employer's "will.