The defender was also full of praise for the club's summer signings after the win over Arsenal.
The former Croatia and Besiktas boss took over at Upton Park this summer as Sam Allardyce’s replacement when his contract came to an end after the conclusion of last season.
Things got off to a good start for him as well, as his side put in a highly polished performance against Arsenal at the Emirates on Sunday and came away with a surprise 2-0 victory.
And Reid says the Bilic and his management structure have come in and demanded a lot from the squad, revealing just what they have been focusing on coming into the new season.
“Fair play to the manager and his staff, they have come in and encouraged us.” he said to whufc.com.
“We have been emphasising working as a team and being a solid unit coming into the new season. They have demanded a lot from us.”
Praise for summer signings
Bilic has been busy this summer, with a number of new faces having arrived at the club as he looks to mold the squad into his own.
They have spent big to achieve that, with the likes of Dimitri Payet, Angelo Ogbonna and Pedro Obiang arriving for relatively big fees and more signings expected before the close of the transfer window.
Both Ogbonna and Payet starred in Sunday’s 2-0 win, and Reid was full of praise for their performances, although it was youngster Reece Oxford who he singled out particularly.
“I thought the likes of Reece Oxford at just 16 produced such a mature performance,” he added.
"Angelo next to me had a solid game and Dimitri has that extra bit of quality and spark that maybe we didn't have last year. There are other players who have arrived at the club that are contributing in training and they will be keen to impress as well.”