Eu vou falar com o departamento de recursos humanos.

You can absolutely omit Eu if the context is clear.

Brazilian Portuguese often drops subject pronouns when the verb already makes the subject obvious. Since vou clearly means I am going, Vou falar com o departamento de recursos humanos is perfectly natural.

Including Eu can add:

• emphasis
• contrast
• clarity

For example:

• Eu vou falar com o departamento de recursos humanos, não você.
  = I will talk to HR, not you.

Vou falar is the most common everyday way to talk about the future in Brazilian Portuguese.

It uses:

• vou = I go / I am going
• falar = infinitive, to speak / to talk

So vou falar literally looks like I am going to talk, and functionally it often means simply I will talk.

The one-word future falarei is correct, but it sounds more formal, written, or less common in everyday Brazilian speech.

So:

• Eu vou falar... = very natural in conversation
• Eu falarei... = correct, but more formal

Falar com means to speak with / talk to someone.

In this sentence, com shows who you are going to talk to:

• falar com o departamento = talk to the department

This is the normal verb-preposition combination in Portuguese.

Examples:

• Vou falar com ela. = I’m going to talk to her.
• Preciso falar com o gerente. = I need to talk to the manager.

Sometimes, yes, but it is not exactly the same.

• Falar com emphasizes communication with someone, often a conversation or direct contact.
• Falar para can mean speaking to someone, sometimes more one-directional.

In this sentence, falar com o departamento de recursos humanos is the most natural choice if you mean you will contact or discuss something with HR.

So for this context, com is the better default.

Yes, o is natural and usually expected here.

Portuguese uses definite articles more often than English does. When referring to a specific department, o departamento sounds normal:

• o departamento de recursos humanos = the human resources department

If you remove the article and say com departamento de recursos humanos, it sounds incomplete or unnatural in standard usage.

Because recursos humanos is treated as a fixed expression, like the name of the area: human resources.

So:

• departamento de recursos humanos = human resources department

Using dos would mean of the human resources, which is not how this department name is normally formed.

This de + noun structure is very common in Portuguese for naming types of departments, areas, or categories:

• departamento de vendas = sales department
• curso de inglês = English course
• sala de reunião = meeting room

Because the full expression is recursos humanos, which corresponds to human resources.

Both words are plural in the standard expression:

• recursos = resources
• humanos = human

Together, they mean human resources, not just human resource.

This is a set phrase, so learners should memorize recursos humanos as one unit.

Yes. In Brazil, RH is very common and natural, especially in speech and workplace contexts.

Examples:

• Vou falar com o RH.
• O RH vai entrar em contato.

This is the abbreviation for recursos humanos and is often used the same way English speakers say HR.

A simple approximate pronunciation is:

eh-ooh voh fah-LAHR kohng oo deh-pahr-tah-MEHN-too jeh heh-KOOR-soos oo-mah-noos

A few helpful notes:

• Eu often sounds like eh-ooh or a quick blended sound.
• vou rhymes roughly with English go, but not exactly.
• falar has stress on the last syllable: fa-LAR
• com often sounds nasal in Brazilian Portuguese.
• In many Brazilian accents, de before a consonant can sound like jee or dji very lightly, but this varies.

You do not need perfect imitation right away; the most important stress points are:

• vou
• faLAR
• departaMENto
• reCURsos huMAnos

The normal word order here is very natural:

• Eu vou falar com o departamento de recursos humanos.

You can omit Eu:

• Vou falar com o departamento de recursos humanos.

You can also move things around in special contexts for emphasis, but the basic order is the one learners should use first.

So the safest standard pattern is:

subject + ir + infinitive + com + noun phrase

It can be either, depending on context.

In this sentence, falar com o departamento de recursos humanos could mean:

• talk to the human resources department
• speak with the human resources department

In everyday English, talk to HR is usually the most natural translation, but grammatically falar covers both talk and speak in many situations.

It sounds neutral and natural.

It is appropriate in:

• daily conversation
• workplace communication
• emails
• professional situations

It is neither too casual nor overly formal. A Brazilian speaker would very likely say this exactly, or use the shorter version:

• Vou falar com o RH.