It is all depend on where you work. Some have normal life working Monday to Friday scaping from work at 2:00-3:00pm on Friday and not caring phones or need to have a comp to work on day off but normally an Engineer it is an exempt employee meaning you can get call at any given time or go to factories to fix issues if have to.
In my case we work 24/7 exempt, and we are InCharge of high-tech machinery to fix or areas etc and we have to get call all the time to fix them even in our day off online or in person.
Many can't keep up with the workload and for example we lose a peer this week because can't do it any longer not having life and found a different position in the company working 5 days, same pay, no pages or calls. work from home and can now smoke and drink in his day off and I mean get high with some legal pot, I guess.
Many people do have priorities and work balance to ensure health and personal stuff to do. I do the job because I do like what I do and studied for it. My lady knew what I like it in life, and she had to compromise knowing I won't change working since the age of 5.
Some others are lazy looking for easy job and good pay as many are out there taking advantage, but I do a work that I earn my pay for sure. I have good pay, benefits, do what I studied for, and I knew that can happen from childhood as possibility, but I have a more secure job because the need and more stability because they need me.
Sure, I am getting older, and I will decline, and new generation need to take over and have opportunity in life to progress and I try to help them to learn as much I know and not thinking that I can get been booted like in a clan because younger kid doing my job.
Engineering work responsibilities depend on company and need and pay for it.