I'm in the process of trying to agree reduced hrs (from 35 to 30) and days (from 5 to 4) with my new line mgr for when I return from mat leave in the summer. We agreed to try and work out something informally prior to me completing the formal paperwork so I told him of the request verbally and then followed up with an email. In our scheduled call today he confirmed that he thought my email request was very reasonable and that he didn't see any issues with it when he received it. However his line manager has reminded him that he will be losing a % of an employee but will not be able to get any additional headcount to cover the workload. So my line manager said he still supports my request and asked I give him a couple of weeks to decide if it is ok or not while he raises it with my colleagues in their various one to one meetings.
I assume that he thinks that my colleagues will say that the impact on their workload is manageable and therefore my request will be granted. However, thinking about it I feel a bit uncomfortable that my colleagues (many of whom I barely know due to reorg while I've been off) will have some say in something so important to me. I know they are all under much work pressure at the moment (my mat cover is doing the basics of my role only alongside his day job!). What do you think? I'm considering emailing my manager to say that I'm uncomfortable with it but I don't want to jeopardise a relationship with someone who assures me he is supportive.