De bereikbaarheid is belangrijk op de kantoordag.

Bereikbaarheid is a noun. It often means things like accessibility, availability, or how easy someone or something is to reach/contact.

It is one of those Dutch words whose exact English translation depends on context:

• for a place: accessibility
• for a person by phone/email: availability or reachability
• in a general sense: being reachable

So even if you already know the sentence meaning, it helps to know that bereikbaarheid is a fairly broad word in Dutch.

Because bereikbaarheid is a de-word.

A very useful pattern is that nouns ending in -heid are almost always de-words:

• de mogelijkheid = the possibility
• de duidelijkheid = the clarity
• de vrijheid = the freedom
• de bereikbaarheid = the accessibility / reachability

So if you see a noun ending in -heid, choosing de is usually a safe bet.

It is made from smaller parts:

• bereiken = to reach
• bereikbaar = reachable / accessible
• bereikbaarheid = reachability / accessibility

The ending -baar often means something like -able in English:

• leesbaar = readable
• zichtbaar = visible
• bereikbaar = reachable

Then -heid turns an adjective into an abstract noun, a bit like -ness in English:

• duidelijk → duidelijkheid
• vrij → vrijheid
• bereikbaar → bereikbaarheid

Dutch main clauses usually follow the V2 rule: the finite verb comes in the second position.

In this sentence:

• De bereikbaarheid = first element
• is = finite verb, so it comes second
• belangrijk op de kantoordag = the rest

So the basic structure is:

De bereikbaarheid | is | belangrijk op de kantoordag.

This is very normal Dutch word order.

Because belangrijk is used after the verb is. In Dutch, adjectives used this way are called predicative adjectives, and they normally do not take -e.

Compare:

• De bereikbaarheid is belangrijk.
  predicative adjective → belangrijk
• De belangrijke bereikbaarheid
  adjective before a noun → usually belangrijke

So:

• after zijn / worden / blijven etc. → usually no -e
• before a noun → often -e

Kantoordag is a compound noun, and Dutch very often writes compounds as one word.

It is made from:

• kantoor = office
• dag = day

So kantoordag literally means something like office day or day at the office.

This is very typical in Dutch. English often uses two words where Dutch prefers one:

• schooldag = school day
• werkdag = workday
• kantoordag = office day

If you split it into two words in Dutch, that usually looks unnatural or changes how it is read.

Dutch often uses op with days or day-like occasions.

For example:

• op maandag = on Monday
• op die dag = on that day
• op de kantoordag = on the office day / on the day at the office

So this works similarly to English on.

That said, prepositions do not always match English perfectly, so it is best to learn them as part of a whole expression.

Because dag is a de-word, and in compounds the last part determines the gender/article.

So:

• de dag
• therefore de kantoordag

This is another useful Dutch rule:

• het kantoor
  • de dag → de kantoordag
• de school
  • het boek → het schoolboek

The final noun is the important one for choosing de or het.

Yes, but the nuance is a little different.

• op de kantoordag = on the office day
• tijdens de kantoordag = during the office day

So tijdens focuses more on the time period during that day, while op simply places something on that day.

Both can be correct depending on what you want to emphasize.

Yes, but it is a bit more formal or business-like than some simpler alternatives.

Depending on context, Dutch speakers might also say things like:

• beschikbaar zijn = to be available
• goed bereikbaar zijn = to be easy to reach
• toegankelijkheid = accessibility

So bereikbaarheid is perfectly normal, especially in work, planning, transport, customer service, or communication contexts.

A rough pronunciation guide is:

be-REIK-baar-heid

A few tips:

• ei/ij in bereik- sounds a bit like the vowel in English eye
• g in belangrijk is the Dutch throaty g/ch sound in many accents
• aa in baar is a long vowel, like a longer a
• Dutch stress in bereikbaarheid falls on reik

And kantoordag is roughly:

kan-TOOR-dach
(with the Dutch g/ch sound at the end)

Yes. This sentence uses a very common pattern:

De/Het + noun + is + adjective + prepositional phrase

For example:

• De planning is belangrijk op maandag.
• De communicatie is duidelijk tijdens het overleg.
• Het contact is goed op kantoor.

So if you understand this sentence, you can reuse the same structure in many other Dutch sentences.