Many checks are carried out by the employer before the confirmation of a worker`s employment contract. The various substantive reviews include referral to former employers of the worker and authentication of documents provided by the worker through educational institutions. There is no statutory provision prohibiting an employer from not having a criminal background check, so if the employer feels the need for a criminal review, there is nothing illegal because it is to the employer`s satisfaction. Collective agreements are therefore formulated by the CBA. Agreements may include, for example. B the bodies of the organising body of trade union activities and collective dispute resolution procedures, including complaints and disciplinary procedures. The material provisions govern conditions of employment, wages, hours of work, rights and salaries of leave, level of benefits, job rating, redundancies, reductions, sick pay, pension and pension plans. Such agreements, which were once properly executed by both parties, become a source of law. The agreements should all be written and carefully crafted, as they should resolve disputes rather than address them. There are a number of sectoral laws that set minimum working conditions for wages, hours of work, leave rights, annual leave and redundancies.