An employee discovered their company had unilaterally changed their notice period from 30 days to 90 days without prior notification, despite their offer letter stating 30 days. Upon resigning and opting to pay for the waived period, they received an email confirming salary recovery for the unserved notice. The discussion explores the employee's options, including pointing out the discrepancy to the company, seeking representation through a staff union, or considering legal action, while highlighting that both parties are bound by the original offer letter's terms.