Nationwide, many letters and parcels were left at the post office again on Saturday: For the third day in a row, numerous employees in the collective bargaining dispute at Deutsche Post followed a strike call by the Verdi union.

According to Deutsche Post estimates, around 20 percent of parcels and nine percent of letters were affected.

Verdi spoke of a high level of participation: 42,000 employees took part in the strike over the three days, after 30,000 in the previous week.

"The high participation in the strikes makes it clear that our members are fully behind the demand," said Verdi Vice President Andrea Kocsis.

The company, on the other hand, criticized the warning strike as "excessive" and reiterated its willingness to submit a new offer at the next round of negotiations on February 8.

According to the union, the warning strike hit selected companies in the parcel and mail centers all day long.

According to Swiss Post, the strike means that letters and packages are being delivered a few days later.

Post: "Group profit largely from international business"

In the collective bargaining dispute, Verdi is demanding 15 percent more salary and an increase in training allowances for each year of training by 200 euros per month over a period of one year.

The union also refers to the expected record results of the postal service.

The Post pointed out on Saturday that the "frequently quoted group profit is now largely generated in international business".

At the same time, it is a "fact that the significantly declining result in the postal and parcel business is no longer sufficient for the necessary investments".

According to its own statements, Deutsche Post expects the next round of wage talks to progress on February 8th.

Verdi Vice Kocsis asked the company on Saturday to submit a "negotiable offer".

"The strikes are an unequivocal response to the attitude of the employer."