That is true,someone was sharing with me recently,he said during the lockdown,as a cost cutting measure,the company decide to lay off more than half of its safety personel and decide to employ new intake and the remaining staff have to train these ones,and their pay was 3times less from what those sacked were earning.If the employees are not well experienced and are not capable to hold the position that is vacant, it is in the best interest of the company to look elsewhere and search for a more experience person to do the job.