I'm back to work now with a 6 month old. The transition back hasn't been going smoothly - people are treating me differently now... but that is a different topic.
Anyway, they weren't happy when I got pregnant and now we're TTCing for number 2. I'm pretty sure that when I get pregnant again it will be the nail in the coffin of my career with this company... but I don't dwell on that even though I am happy here and love my colleagues. My feeling is that the company would never put me before their bottom line, so I shouldn't live my life worrying about my employers think.
On the other side of the fence, a girlfriend of mine put TTC on hold because her boss told her she is up for a promotion in February. She said she would feel guilty if she got pregnant soon after or before getting the promotion.
What are you thoughts?

DS #1 born 12.3.13
BFP #2 09.21.14 EDD: 06.06.15

Re: How much input did/does your job have on family planning?
BFP 1- EDD 2/09/11 Missed MC DX @11 weeks D&C- 7/25/10 BFP 2- EDD 12/22/11 Natural MC @ 5w 2d BFP 3- EDD 1/25/12 DD Josephine born 1/16/12
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Trying for #1 since May 2010 l DX ~ Unexplained Infertility June 2011
IUI #1&2 = BFN; IUI #3 = BFP, m/c @ 6 weeks
November '11 ~ IVF#1 ~ ER 11/18 (29R, 17F) ~ 5dt of one beautiful blast on 11/23 = BFP!!
Beta #1 9dp5dt = 116, P4 = 28 ~ Beta #2 13dp5dt = 700 ~ Beta #3 20dp5dt = 9500, P4 = 26
1st u/s 12/27 - hb of 156!! EDD 8.10.12
**TEAM GREEN!**
Sweet baby boy born 8.18.12
Trying for #2
FET #1 - October '13 - c/p l FET #2 - December '13 - cancelled
l FET #2.2 - 1.30.14 - BFN
~ More testing - hysteroscopy, endometrial biopsy & more b/w - all normal / negative~
Surprise BFP while waiting on FET #3 ~ beta #1 500; beta #2 1600; first u/s 4/3 - measuring 5w5d, no hb yet!; 2nd u/s 4/10 - hb 132, measuring 6w6d - EDD 11.29.14
**TEAM GREEN!**
Beautiful baby girl born 11.24.14
I'd say for #2, the biggest factor that influenced timing was when I was going to finish my MBA. I knew I couldn't work full time, have a newborn / infant and a toddler, plus finish my MBA. So we didn't start trying until I would at least be on maternity leave through the end of my program. As it is, I'll have 1 course / 5 weeks from this baby's due date and the end of my last class.
I say do what works for your family. I totally agree with this. I will say that when we were TTC, we tried to plan it for my non-busy time at work just because it would make life easier for me and my coworkers. But if it wouldn't have worked out that way, I wouldn't have not TTC just because of that. There's not ever a perfect time to have a baby, so you just have to do what works and look at the big picture.
My employer, for the most part, has been supportive but there was a time when I was pregnant and I heard two of my bosses discussing a possible promotion and saying something to the effect of that perhaps I wouldn't want the promotion as I was pregnant with my third and who knows if I was ever going to return to work, etc. After that, I let them know that I had overheard their discussion and that in no uncertain terms I was interested in being considered for the promotion and that I had zero plans of leaving the workforce. I've received two promotions since then and also had two more children during that time.
Kelly, Mom to Christopher Shannon 9.27.06, Catherine Quinn 2.24.09, Trey Barton lost on 12.28.09, Therese Barton lost on 6.10.10, Joseph Sullivan 7.23.11, and our latest, Victoria Maren 11.15.12
Secondary infertility success with IVF, then two losses, one at 14 weeks and one at 10 weeks, then success with IUI and then just pure, crazy luck. Expecting our fifth in May as the result of a FET.
This Cluttered Life
Interestingly, my MIL, who was a SAHM, purposely timed her pregnancies around FIL's coaching schedule. Meaning she knew better than to give birth during football season, so DH and his brother both have early July birthdays.
That being said - this is all an "it depends" for me. A company shouldn't have a say, but I can fully understand the many scenarios where women may want to wait for a certain period of time because of something going on w/ their job.
Recently a friend of mine told me his boss had said she'd be retiring soon (like within 3 months) and he was in line to get her job & lead the department. He said "that's great. I look forward to talking about it more when the time is right." It's never been discussed again because two weeks after that conversation, boss's husband had a heart attack and now needs round the clock care due to his medical decline. That was three years ago. Imagine if they'd waited to have kids because of his promotion!
While I would like it not to have any influence, it does to a degree. DH is in line to own/run the family business and when my boss leaves our company in 1.5 months it will be my responsibility to run the company (100+ employees) on a day to day basis when the president isn't here, which is 75% of the time. Since we both are wanting/needing to devote a lot of time and attention to our jobs, while also devoting just as much or more to our family, it is going to definitely be a major factor on whether or not we are one and done. There are many other factors that will be considered as well of course. That said, if DH and I decide we want one more, we will not let our careers stop us, but realize that we will have to work even harder to keep that balance.
We would potentially like to have a third one, but I'm starting a new job and are moving back to our home state of Illinois and my DH doesn't have a job yet, and I would hate to start a new job and then tell them I'm pregnant again, so we are waiting a year or possibly longer this time. You just have to figure out what your priorities are and decide that if you didn't have a job for a while would your family be fine and be able to work it out in the mean time? I know it's a hard decision, but hopefully you'll figure something out that works for you.
Work didn't influence when I had my kids (01/2012, 02/2014), but it has influenced the fact that we are DONE. I can't manage my department/further my education and still be the kind of mom I want to be with a third kiddo. Even with #2, I cut my 12 month mat leave short to 17 weeks because I knew that my department would be downsized/eliminated without me (b/c I bust my a$$ trying to expand).
In an ideal world and at one point in my life, I thought I'd love to have 4 kids. I would still love it, but at the end of the day it's asking too much and I know I'd be spread too thin.