*Updated* see comments

My husband has a meeting at work tomorow with the manager to ask for a Sabbath off every week.
He works for a grocery delivery company in UK and drives a van . The shifts are various days but either early mornings or late evenings.

He is requesting early shifts only from now on and the Sabbath off.

The manager said to bring any supporting evidence to prove his special situation.

Can anyone suggest where I can get some help, perhaps a template letter that he can write explaining that there should be equal opportunities with other religions like Muslims and Jews.
We are in UK so 6 hours ahead of US. He needs any letter by 12midday tomorow .

Thank you in advance

#Torahobservant #shabbat