I recorded my termination meeting because I was fearful that the employer would say that I resigned and was not sacked if I later brought an unfair dismissal claim.
You are not required to sign a warning letter and you should certainly not do so if you consider the warning to be unjust or unreasonable.
If an employer is seeking to change your working hours, they must ensure they are acting within the confines of the law. This includes adhering to contractual obligations, engaging in appropriate consultation and ensuring that the change is not a result of any discriminatory reasons.
Multiple laws will apply to your individual case.
Fair Work Act 2009 - protection and compensation
Find out how this Act influences your case.
Dealing with misleading conduct by your employer
The Competition and Consumer Act 2010 limits the way employers can conduct themselves.
Find a useful list of courts and institutions which may be involved in your case.