Termination immediately after a 30 day suspension

Hi I hope someone here can help me. I was asked to sign a resignation letter by my employer (graceful exit) because of my allegedly poor performance and something I did that actually merits dismissal from the company according to our COC. However, the latter was resolved by the parties involved and the verdict for me was a 30 day suspension. However, before the last day of my suspension, my supervisor contacted me and asked me to hand in my resignation because they have reviewed my case and performance and they deem me as a candidate for termination and they asked me to sign a resignation letter instead which I did as I thought I am left with no choice. However some of my peers who are well versed with labor laws advised me to appeal my case to DOLE. Then the employer said that the suspension was a 30 day preventive suspension pending investigation but it was not made clear to me and was not stipulated on the memo given to me. I hope someone can advise me regarding this matter. Thanks

you may be validly preventively suspended for a max of 30 days. it is not a punishment, but a way for the company to protect itself if you are a clear threat.

if you wish to contest your suspension or dismissal, then the remedy is to file a complaint at nlrc

Thank you for your reply. However, should they not make that clear to me especially on the paper work they have given me? Our company (especially our power-tripping manager) has this habit of finding fault in people she does not like and suspending people left and right. I even had a co-worker who was suspended for 15 days since our manager said it was already his second offense when he was not even punished on his first offense.

it should be clear that you are being preventively suspended, but it doesn't have to say how long.