Such agreements can be appreciated by workers who want flexible working time and by employers who want to reduce the cost of overtime pay. The Fair Work Amendment (Variation of Enterprise Agreements) Regulations 2020 (April amendment) temporarily reduced the period of access to a proposed amendment to a company agreement from 7 calendar days to one calendar day. Either party to a company agreement, a transitional instrument based on agreements or a Division 2B-State instrument may request the Commission to amend its agreement in order to remove any ambiguity or uncertainty. In the event of a dispute, the question whether the parties have concluded a valid agreement on the modification of their contract will be decided by the Tribunal, taking into account the relevant facts, in the light of the usual rules of contract interpretation. To amend a contract, both parties must generally agree before the amendments come into force, preferably in writing. . . .