the Archaeologist vs the Site Director

while discussing random facts with him, the Site Director mentioned in passing something about the Archaeologist working weekends. the Archaeologist said she'd rather not. conversation:

SD: but you have to.
A: why?
SD: because if you don't work weekends, you won't be offered regular work.
A: why?
SD: cos it says so in your contract.
A: no, it doesn't.
SD: yes, it does.
A: it doesn't say so in my contract.
SD:that's strange. i'm sure i'd asked the Dean to put it in. well, i'll ask him again.

and the Archaeologist thinking 'i don't care what the Dean puts into any new contract, as it really won't affect my contract', and leaving it at that, as the SD seemed rather frazzled. the Archaeologist was not a little pissed off. how was the SD running this dig? she didn't mind working weekends, she just wasn't prepared to be threatened about it. this SD seriously lacked people skills. it started to remind her of an old dig ahe'd been on. same problem. didn't people ever learn that threatening people into work was not the best way to go?? present things sensibly, and people will generally understand and accept. do it the other way and have a very bad feeling on any dig, ultimately ruining the whole excavation.