The Last Straw/Perfect Timing

I get to work today, sit down at my desk and my (former) manager comes up to me

Him:"Oh, I got an e-mail from Operations, you have a shift change next week!"
Me: "Uhhh...to what?"
Him:"Starting Monday, you have 5pm-1am, Thursday and Friday off"
Me: "...Well, I can't do that....
Him:"Oh, you bus don't you?"
Me: "...yeah..."
Him:"Well, I'll pass on that concern to them, but you really should speak to your manager - Tom" <- not Tom's real name
Me: "Wait a minute - since when's Tom my manager?
Him:"A week and a half ago - you didn't know?"
Me: "No! No one told ME! That's why I've been sending YOU e-mails!"
(he hangs his head)
Him:"So he never came up and introduced himself as your...well, I'm sorry. And I don't mind dealing with the e-mails, but you need to talk to him about this issue"
Me: "Wait so you said my shift changes monday? Today's Wednesday. I should get a week's notice"
Him:"You're right, so it'll be Wednesday"
Me: "Wednesday..."(I smile)"...I'll be in Cuba Wednesday - for two weeks. Yeah, that's cool, my shift can change then" (we both laugh) "Thanks for the heads up, I'll talk to Tom when he comes in, if the shift change is non negotiable, I'll be giving my two weeks notice on Tuesday "


So I spoke to Tom, and he'll be speaking to Operations on my behalf, but it "doesn't look promising", though I "Shouldn't panic" - I'm not exactly panicking here, I'm just saying that 5pm-1am ain't gonna happen. But in any case, even if someone in Operations wakes up and realizes that someone without a car has no way of getting from Kanata to the West End after 1am, I've lost too much faith in my workplace. As soon as I come back from Cuba I'm job hunting.


Let me explain:

I had another position in the same company, where
I worked 8am-4:30pm, with weekends off - this shift was pretty much guaranteed as long as I stayed in this department as those roughly were the hours of operation.

I was asked to switch to another department with hours of operation between 9am-1am. I was assured that I would be among a group that would get first pick at shifts, and the fact that I bus would be taken into consideration. I accepted.

Well, I never got to pick a shift, but the first week I had 11am-6pm, weekends off. Pretty cool.

Halfway through that week, I found out my shift would be changing to 12pm-8pm. Weekends off. Not shabby, I didn't even complain about getting less than a weeks notice.

Two weeks later, I get 4 days notice that my shift will change to 3pm-11pm, weekends off. Well, I'm not a morning person, and I still have my weekends - I let it slide.

...But now this...yeah, this is the last straw...

...Or perfect timing, what better way to spend my last two weeks with the company than on a paid vacation in Cuba?