I imagine that Director, Reserve Forces will be just a little irritated by this...
After all, if the MoD sacks reservists who are called up, why shouldn't all the other companies who have reservists follow their example? And how can the efforts of DRF to persuade employers that they should be sympathetic towards their reservists be taken seriously?
The solution for the 'senior officer' ought to be a hats-on, no-biscuits presentation of a P45.