In message , at 14:40:07 on Thu, 28 Jun
2018, Graeme Wall remarked:

With 231 gates, that's over 300 employees per gate or over 150
employees per gate per shift assuming an average of 2 shifts.

More likely three shifts.

Working time directive (yes, I know, people voted to rid ourselves of
such Brussels imposed Curly Banana Republic red tape) converges on
approximately a 37hr week for 52 minus 6 weeks of the year.

That's 37*46=1700hrs a year, from which one has to subtract an allowance
for sick days and training. Let's say 1500/yr

If Heathrow operates 20hrs a day (allowing for after-midnight finish and
4am start), 365 days a year that's 7300.

Which if every job function was on duty the whole time gives 4.8 sets of
employees. Let's call it 4x for the purposes of the debate.
--
Roland Perry