One of the most common questions we hear is some version of: "Can my employer just let me go without warning?" The honest answer is: it depends heavily on how you're classified as a worker, and most employees don't actually know which category they fall into.
As a general rule, permanent workers are entitled to a written notice period before termination without cause, with a cash equivalent typically owed if the employer wants to skip the notice period entirely. Probationary and temporary workers are usually owed a shorter notice period, and casual workers the least protection of all.
The category that causes the most disputes is misclassification — an employer treating someone as "temporary" for years when the actual working pattern looks permanent. If your notice period doesn't match what you'd expect for your real working conditions, that mismatch is worth having looked at.
This is general information, not advice on your specific employment contract. If you're facing an actual termination, the safest next step is getting your appointment letter and termination notice reviewed together, since the two documents are read side by side in any dispute.