Many workers,particularly the young and immigrants, have a hard time finding a job, especially a full-time job. At the same time, many companies in various sectors struggle to fill certain positions. This seemingly paradoxical situation stems from the difficulty of achieving a perfect match between job seekers and available jobs. What is called the flexibility of the labour market represents an excellent solution to this problem, for both employees and employers. This Economic note aims to illustrate this general notion by delving more specifically into the role of the staffing services industry.