Can someone please tell me what uniform this man is wearing?

[Wilhelm Saris]

HPL2008: banned or not. You are right he is a laborer.

For those interested and to be specific and as mentioned in DRB Dienstkleidung und Abzeichen from 1936, page 2:
Dienstkleidungspflichtige und Dienstkleidungsberechtigte Arbeiter, die nicht Beamtenanwärter sind

So either the guy's duty it was to wear the uniform or he was allowed to wear the uniform and he
could not be categorized as a candidate official.
So, there are more then one possibility, but this one cannot see with this photograph. Just to make it complicated.
So, there also was a difference in duty to wear a visored cap or the allowannce to wear one (the rest of the dress then was civil).