On Black Friday (25 November), dozens of Amazon employees went on strike and gathered in front of the warehouse in the Parisian suburbs, demanding pay raises and improved working conditions.

World Business Watch | Amazon warehouse workers stage Black Friday strikes around world

It is that time of the year when global retailers will offer deep discounts on thousands of products, millions are waiting for the Black Friday sale which marks the holiday season in the US.

United States: Black Friday sale marks the holiday season in the US

Months of preparations and strategy have been invested to ensure stores to take as much of the retail pie as possible.

Black Friday: Retailers prepare for the big day

Shoppers spent an average of $289.19, compared to $299.60 in 2015

US Black Friday: More shoppers but less spent per head