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...However the employer expects me and the other to talk with him and fix some things with him after 18:00. So I usually end leaving at 19:00 at best...

You have a cultural problem. Those are hard to solve, especially if "everyone" and "usually" are involved. You have to fight those two.

Usually: start tracking your overtime, you need a metric to know if your life is getting better or not. Start writing down your extra hours worked, every day. Then you can approach your boss, with something like:

Hi boss, i know usually we have meeting after 6pm, can we move some of those earlier in the day? I have evening plans this week.

Or every day try to pre-schedule meeting with a boss:

Can we meet at 5pm to tidy things up, is there any unfinished issues? Can that be pushed for tomorrow?

You have to get ahead of the meetings happening after 6pm.

Everyone: consider talking to your colleagues. You all probably already have talked about that issue, and there is understanding that it is not a normal situation. It might be harder to change things if you are the only one having problem with it (I am not saying that's bad).

Changing culture is like changing habits, it happens slowly. Get some patience.

How do I tell him I'd like to leave at 18:15 and not after?

"I'd like to leave no later than 18:15."

I'm going to have to go "blunt" route here. You need to immediately change your willingness to work after hours.

Don't give any excuses, just tell your boss that you expect to work the same hours as everyone else, including leaving when everyone else does. You need to state this in a way that prevents everyone else from having to stay as long as you currently are.

You don't need to tell them you are busy.

You don't need to tell them you have projects.

You don't have to tell them about your commute.

You don't have to tell them about how you need to rest after a long day.

You don't have to tell them about how you need to get away from the stress.

Be professional, not rude. If they remain professional and understand, great. If they become rude, push you to continue working late, or push you into coming in early, you might want to start looking for a new job. You may have already set expectations that you can't change at this position, so look for a new one, setting expectations in a way that actually works for you.

This is a job. They pay you for your time and effort, they don't pay for your private endeavors. If they want to get to know you, that's fine, but it's not part of the job. It's also not part of the job to ignore having a life outside of work.

Regardless what many other people say, the job isn't there to take full control of your life. That's nothing against other Answers, there's plenty of people you know that'll tell you to endlessly work, and that's a short path to burnout and truly hating your job, your life, and pretty much everything else.

You still need to do your job to the best of your ability, including improving your ability, but only during work hours. There may be times when you absolutely have to work extra hours, but those should be the exception, not the rule.

As a secondary though, your boss might be attracted to you. They may be working with you late as an excuse to be with you, or vice versa. Without knowing more about the situation, the romantic side is only a wild guess. You boss might be strictly business and just trying to get cheap/free labor from you, but maybe there's more to it. I'm just throwing this out as "possible".

Get a life outside of work. Set work to second place in your life instead of first. When it is time to leave work, pack up and leave. Do not hang around to chat or socialize. Turn off the computer and go. Be packed up five minutes before the end of the day if this is possible. Don't let anyone stop you from walking out the door.

Look around you. There's people you work with who have children or hobbies or other life commitments. As people get older their life changes, their time becomes more valuable and their ability to stay back an hour after work becomes impossible.

A lot of people who don't have children get hot under the collar at those who do who leave at 3pm to 5pm to absolutely positively be there when their child checks out of school or daycare. People who compete in sports have to attend practice. Have you ever seen someone try to talk a gym junkie out of their before work/lunchbreak/afterwork workout? Right.

Your boss doesn't need to know why you are leaving, only that you are going. If they do hold you back you can leave. If you have finished the work allocated for the day why are you still in the office? There is always tomorrow.

People with a partner get used to saying to people that they will be in trouble if they don't get home on time. People with commitments get used to telling people that they have to be on the other side of the city in the next half an hour. Eventually other people understand and adapt.

If your boss wants you to stay back then they need to give notice or pay overtime. When they do they can expect employees to push back. Not with 'No, I have a life' but with 'I have commitments after work' or 'Sure, I can do that, I'll clock it as overtime'. Then you'll see if your boss really wants you to work, in which case they will pay you overtime, or if there is something else going on.

If you have an Office Space Boss then your best bet is to avoid them.

The only reason to stay back and work for free is if there is something in it for you. A promotion? Time in lieu? If work is not paying you for the hours spent at work then don't be there. Years later you will look back and wonder why you gave up those hours of your life for free.

Why not being direct:

"It is due past my time, I am tired and need to go home, can we talk it tomorrow morning?"

Or some white lies:

"Sorry, I have a meeting with my dentist/wife/mum. We will talk tomorrow."

The point has you say in the question, has that you are selling your time, but not your life and soul.

Anyway, it has to be give and take from both sides. If a superior obliges me to be everyday late for no apparent reason, I also won't be there out of work hours.

When I had a egomaniacal team lead that arrived 3-4 hours after us and due to power trips and disorganisation systematically wanted to talk us late, sometimes I talked with him, often in a while I told him : "too late to talk, I am too tired and have to go home". Or as we were the same age, I often told him "It is not my fault you arrive late, I need to rest, is it urgent?". On the other hand, as I had a lot of leeway, I also made a point of being always available when I was needed outside of work hours when we had malfunctions, and that in turn "bought" me more leeway.

People are not robots, and need their time off, both to have a meaningful life, and to rest. Otherwise, it does not make sense to work at a job that enslaves us.

PS Over time, I also understood one of the motivations of that team lead to book meetings late is that he did not agree with the hours HR/our contract defined. Once again his problem, we were a very large organisation, for the better or worse.

PPS To give a perspective on give and take. When we were under a cyber attack, I logged an insane amount of extra hours in a single month, barely slept that month. On the other hand, summer time they let me define my working hours (I was working projects), and when I had a surgery at the hospital they turned a blind eye for me not being able to reach the mandatory quota of hours in two or three months. If you are working with minimally reasonable people, both parties will reach an understanding if they are willing to compromise.

Schedule a short regular appointment (maybe 10-15min) with your boss sometimes between 1pm and 3pm to "align on highest priority topics".

On the day you do what was discussed then, unless it is a real unforeseeable emergency.

There can be only few options. Mainly, you either quit or get a union involved right away.
More details:

• if you have an on-call contract, your employer can effectively blackmail you into not giving you more work if you ever say "no". This can only be solved by changing job.




• if you try to discuss the matter with your boss, it's very likely he/she will have a massive ego and will flag you as a traitor (not a metaphor). This will see you fired or pushed out, and it's not recommended. This assumes you work for a family-run company.




• if you are working without a contract, your only chance is to bring in a union representative, sue the company and get hired with a normal contract plus some money. This will still see you fired or pushed out, and it's not recommended.




• if you signed any type national contract, refer to regulations and rights for that specific agreement. A union rep can help you.




• if you are less than six months away from gaining additional protections, the recommendation is to endure until you move into a "unlimited time" contract.

Whatever contract you have, you should start talking to a union rep asap.