Commonly known as the 90day probationary period, this is the time duration when employers assess whether a new employee is a good fit for the company. Empower yourself with the knowledge to protect your rights as an employee.The 90 day probation period is primarily for the employers benefit in avoiding an unemployment compensation claim charge to their record. The employment contract probationary period is a fixed term of employment in which the employer assesses or analyzes if the employee is fit for the job or not. But unless you have an employment agreement or a union contract probation is really indefinite. The main reason that employers want to have a probationary period is to make themselves feel less guilty if the newhire doesn't fit or can't do the job. The term "probation" has very little legal meaning in employment law. The ordinance applies to all employees who perform "at least 80 hours of work for pay within the City of San Antonio, Texas in a year for . . .