I work as a factory laborer in Nonthaburi.

It's 1:30am and I'm still not home. This just happened and I'm still confused, so I snuck away from the foreman to make a post. I'll go back later lolol

Short version first — the shift boss handed out a single A4 sheet and one blue pen and told us to sign that we "acknowledge the shift change" and said actual work hours would be filled in later. Me and my teammates do rotating morning-afternoon shifts; there's usually about 2 hours 30 minutes we have to spend fixing a broken machine before the shift ends. But the paper had no company letterhead, no signature, no date — just a place for a name and employee ID.

I'm 31 and have worked here nearly three years as a machine operator on rotating shifts. Since the new shift boss took over he said we can extend work time as needed, but if it goes past the shift write it in the OT book and we'll claim pay — fine, no problem. But last night the machine broke down real bad near the end of the job and he called everyone to sign like, urgently. Like really rushed.

Some people signed because they were scared of getting scolded or losing hours. I wasn't in a hurry but I felt uneasy, so I asked the boss "what is this for?" He snapped back "keeping it as a record in case of an inspection" — sounded rushed and then he grabbed the paper back when I asked to read it first.

He also said that if you don't sign it means you're not cooperating with the team and you'd be "taken off shifts" or "subject to review." I'm like, huh? And if they cut pay, will there be clear paperwork? I didn't want to argue in the factory but it felt weird.

More confusing: when I checked the documents tied to the boss's report, one column had extra text added: "responsible for work beyond regular hours without claiming OT." It wasn't written in my handwriting or several other people's. I was stunned — does that mean they're forcing us to accept not being paid OT or allowing them to deduct pay? Really confusing.

A coworker who's been here five years said the boss asked them to sign to "make accounting easier." But after signing and seeing that extra line, he rushed to talk to the boss again and the boss replied sarcastically, "If you don't like it, quit." I felt...that's heavy, right?

Another boss likes to have people guard machines off-shift without recording it in the system. He says recording is too much and makes clearing stuff hard, but if someone finds out he'll call it a rule violation — so he wants unpaid work but if anything goes wrong he'll throw it back at us? I'm exhausted just thinking about it.

Now I'm wondering if I'm overthinking or if this is actually wrong. Maybe this is just the factory culture and I only noticed it now — in the beginning I just smiled and worked, but now I'm not sure how to protect my rights. If I talk to HR will it help? How should I keep evidence — keep the paper I signed and scan it, or save the department Line chat conversation? I'm really lost.

If anyone's gone through this please give me real advice. I don't want to start a fight because I work with these people every day, but I don't want to be taken advantage of either. P.S. Sorry if my typing is messy — OP is new to filing complaints T_T