As Germany's eyes turn to the screen to watch the German football team's decisive World Cup group game against South Korea on Wednesday, it has been estimated that the game could cost German employers up to €200 million ($233.3 million).

The Institut der deutschen Wirtschaft (IW) told the newspapers belonging to the Funke Mediengruppe that it expected only around 30 percent of employees to continue to work after kick-off at 4 p.m. local time (1400 GMT/UTC).

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If every second person watches the game during the last hour of the working day and does not make up for this lost work time, the institute estimates the cost to employers could be between €130-200 million (roughly $150-230 million).

But, the researchers emphasized that the experience of watching a football game with colleagues at work could strengthen team spirit in the office, which in turn could have a positive impact on productivity in the following days.

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"It's not always about money, but also about teambuilding – and there's certainly nothing better than watching an exciting football match together with your colleagues," said IW labour market expert Christoph Schröder. "Let's just hope the German team wins."

In terms of raw costs to the German economy, calculations become more complex again. Some of the workers leaving the office early might be heading to a favorite bar or restaurant to watch the game with friends, so gains in some sectors are as likely as losses in others.